bluuebunny/crossref_metadata_2025 huggingface dataset:
Changes of natriuresis and prediction of cardiovascular events in patients with type 2 diabetes and decompensated heart failure over therapy with sodium-glucose cotransporter 2 inhibitors and standard diuretic therapy
Authors: Abdullaev O. A. , Arutyunov A. G. , Vereshchak D. P. , Tavlueva E. V. , Konik V. A. , Bylova N. A. , Puzenko D. V. , Kulagina N. P. , Nurieva I. R. , Zanina T. V. , Arutyunov G. P.
Published: March 2024

Aim. To evaluate the influence and changes of clinical and water-electrolyte parameters on the risk of cardiovascular events in the early period after decompensated heart failure (HF) in patients with type 2 diabetes (T2D), taking into account the influence of standard diuretic therapy and diuretic therapy in combination with sodium-glucose cotransporter 2 (SGLT-2) inhibitors.

Material and methods. The study included 119 patients with type 2 diabetes and class III-IV HF. The duration of diagnosed HF at the time of enrollment was 6,9±1,1 years.

Patients who met the inclusion criteria at the time of hospital admission were randomized into a group of standard therapy for decompensated HF (control group) and a group of combined diuretic therapy — loop diuretics + SGLT-2 inhibitors (main group).

Results. Against the background of combined diuretic therapy with SGLT-2 inhibitors, a significant increase in diuresis was achieved, starting from the 2nd day: on day 2 — in the main group 1,342,83±159,74 ml/day and 1,250,17±134,53 ml/day in the control group (p=0,001, 95% confidence interval (CI)), on day 3, in the main — 1,895,17±249,95 ml/day, and in the control — 1,723,78±252,49 ml/day (p=0,004, 95% CI), on day 4, in the main — 2,382,50±246,29 ml/day and in the control — 2,124,83±2,86,44 ml/day (p=0,000002, 95% CI), on day 5, in the main — 2,785,50±282,38 ml/day and in the control group 2,458,39±273,36 ml/day (p<0,001, 95% CI).

A comparison of the two groups showed a significant increase in natriuresis in the main group on day 5 (+111,1±10,54 ml) compared to the control (+75,53±15,01 ml, p<0,001, 95% CI). Extracellular fluid volume, determined by bioelectrical impedance analysis on day 5, decreased significantly higher when taking SGLT-2 inhibitors: in the main group the decrease was by 5,48±2,19 kg, in the control group — by 2,92±0,73 kg (p=0,02, 95% CI), On day 5, we revealed a significant inverse relationship between natriuresis level and extracellular fluid volume (r=0,217, p=0,018). Dapagliflozin (D), like empagliflozin (E), significantly and equally increases the level of natriuresis (D +108,25±13,56 mmol/day, p<0,001, E +112,52±8,50, p=0,00009) and reduces the extracellular fluid volume (D -5,05±1,46 kg, p<0,001, E -5,69±2,47, p<0,001) on day 5.

Conclusion. In patients with type 2 diabetes hospitalized for decompensated HF, therapy with SGLT-2 inhibitors + loop diuretics lead to a significantly greater diuresis, natriuresis and a greater decrease in extracellular fluid volume. A significant inverse relationship was found between the extracellular fluid volume and natriuresis level on day 5. Dapagliflozin effectiveness in edema, assessed by natriuresis level on day of treatment, is identical to the empagliflozin.
Echocardiographic parameters of the left ventricle in patients after Q-wave and non-Q-wave myocardial infarction
Authors: Oleynikov V. E. , Salyamova L I. , Golubeva A. V. , Vershinina O. D. , Chernova A. A. , Donetskaya N. A.
Published: March 2024

Aim. To perform a dynamic assessment and comparative analysis of non-invasive parameters of myocardial function in patients with Q-wave and non-Q-wave myocardial infarction (MI) during 24-week follow-up after revascularization.

Material and methods. A total of 95 patients with acute MI were included. On days 7-9 and after 24 weeks, speckle tracking echocardiography was performed with assessment of global longitudinal (GLS), global circumferential (GCS) and global radial strain (GRS), global work index (GWI), global constructive work (GCW), global wasted work (GWW), global work efficiency (GWE).

Results. Taking into account the presence/absence of the Q wave, the subjects were divided into two groups: Q-wave MI — 66 patients (69,5%), non-Q-wave MI — 29 (30,5%) people. In the Q-wave MI group, by the 24th week, most parameters of myocardial performance were significantly lower than in the comparison group. In group 1, GWE was 93 (87; 96)% vs 96 (91; 97)% (p=0,04) in group 2; GWI — 1429±444,1 and 1653,3±385,84 mm Hg %, respectively (p=0,02). The GCW level in the Q-wave MI group was 1640±477,8 mm Hg % vs 1852,9±440,88 mm Hg % in the non-Q-wave MI group (p=0,04). Subsequently, a favorable increase in GLS (p=0,01), GWI (p=0,04), GWE (p=0,01), GCW (p=0,03) was revealed in the non-Q-wave MI group.

Conclusion. The results obtained suggest that non-invasive parameters of myocardial performance can be used to assess transient ischemic dysfunction due to myocardial stunning, expressed to varying severity in patients with Q-wave MI and non-Q-wave MI.
Mâverdî’ye Göre Hz. Peygamber’in Nübüvvete Hazırlık Safhaları
Authors: Dilek Mehmet
Published: March 2024

Öz: Allah, kulları ile irtibatını yine onlar arasından seçtiği peygamberler vasıtasıyla kurmaktadır. İlk insanın aynı zamanda ilk peygamber olması da nübüvvetin insanlık için gerekli olduğunu göstermektedir. Allah, peygamberlere bazen kitap ve sahifeler vermek suretiyle bazen de herhangi bir kitap ve sahife vermeden emir ve nehiylerini bildirmektedir. Peygamberler, bunları insanlara tebliğ etmek için seçilmiş elçilerdir. Yaratıcı ve yaratılanlar arasındaki iletişimi sağlamak ağır ve zor bir görevdir. Mesuliyet gerektirdiği gibi bu vazifeyi ifa ederken karşılaştıkları zorluklara katlanmak da güçlü bir iradeyi gerekli kılmaktadır. İnsanların, peygamber olduğunu söyleyen kimselere inanmamaları, alaya almaları ve kabul etmemeleri, nebilerin hayatında sıklıkla karşılaştığı katlanması güç hallerdendir. Öte yandan müteâl bir ilaha ve O’nun kelamına doğrudan muhatap olmak bazı kabiliyetlerin olmasını zorunlu kılmaktadır. Bu sebeple peygamberlerin hayatları incelendiğinde bu görevi almaya hazır hale gelebilmek için ilahî bir eğitimden geçtikleri anlaşılmaktadır. Hz. Peygamber’in hayatına baktığımızda gerek nübüvvet öncesi ve gerekse sonrasında bunun örneklerini görmekteyiz. Hadis kaynaklarımız yanında Hz. Peygamber’in hayatını anlatan siyer kitaplarında ve bizzat onun nübüvvetini ispat için yazılan eserlerde bunların bir çok örneğini okumaktayız. Hz. Muhammed’in peygamberliğini ispat için te’lif edilmiş olan çalışmalardan biri A‘lâmü’n-nübüvve adıyla bilinen kitaplardır. Beşinci hicrî asır âlimlerinden olan Mâverdî, söz konusu isimle yazmış olduğu eserinde, Hz. Peygamber’in nübüvvete hazırlanması ve kendi peygamberliğine inanması için altı safhadan geçtiğini anlatmaktadır. Maverdî, Hz. Peygamber’in nübüvvetin ağır yükünü kaldırabilmesi, şaşırmaması ve zor duruma düşmemesi için Allah’tan kendisine lütuf ve nimet olarak bir hazırlık safhasından geçtiğini ifade etmektedir.

Bu makalede Mâverdî’nin ifade etmiş olduğu bu altı safha ayrıntılı bir şekilde ele alınmış, rivayetlerin sıhhati üzerindeki tartışmalara yer verilmiş ve konu etraflıca değerlendirilmiştir.
Consumer Cynicism in Influencer Marketing: An Impact Analysis on Purchase Intention and Brand Loyalty
Authors: Gökerik Mehmet
Published: March 2024

Social media has become a significant platform that meets consumers' information, entertainment, and socialization needs in today's world. In this dynamic environment, consumer cynicism represents a sceptical and critical attitude developed towards brands and marketing messages. Influencer marketing involves the strategy of using social media influencers to promote businesses' products and services and is observed to have a significant impact on consumer cynicism. The study has shown that credible posts and influencer recommendations reduce consumer cynicism, thereby increasing brand loyalty and purchase intentions. Findings from a survey of 214 participants in Karabük, analyzed using structural equation modelling, indicate that the authenticity and realism of influencer content can enhance consumers' trust in businesses, significantly reducing consumer cynicism. This reduction leads to an increase in brand loyalty and purchase intentions. The research illuminates the interaction between influencer marketing strategies and consumer cynicism, emphasizing the potential of influencer marketing to mitigate consumer cynicism and its subsequent positive effects on brand loyalty and purchase behaviours. The findings of this study are particularly important in today's marketing understanding, where the importance of digital marketing strategies is increasing, and consumer scepticism is frequently observed. In this context, the research demonstrates the potential of the effective use of influencer marketing to create value for businesses and expand the consumer base, highlighting realism and trust as critical factors in influencer-business collaborations. Thus, the study provides awareness of how businesses can strategically use influencer marketing to impact consumer attitudes and decisions positively.
Children's online care during COVID-19
Authors: Broering Camilla Volpato
Published: March 2024

Abstract Objective: This study aims at shedding light on online child psychotherapy using cognitive-behavioral therapy as well as suggesting forms of psychological interventions during a pandemic. Method: Since the beginning of the recent coronavirus (SARS-CoV-2) outbreak, which causes COVID-19, there has been a great concern about a disease that has rapidly spread over the world, bringing about several different socio-economic issues. The fear of contracting the disease has led to safety measures and uncertainties with regard to the future, and it is believed that social isolation has had a direct and psychological impact on both adults and children. This way, we conducted a systematic search for literature review articles. Results: The clinical practice has led to observe that children had their routine interrupted and, consequently, prevented from basic activities such as going to school, being separated from friends, being apart from grandparents, spending the day with their parents, and not to mention, depending on their age, attending online classes in the most varied ways. Conclusion: It is clear that through the use of cognitive-behavioral therapy, forms of psychological interventions can be suggested in the face of the COVID-19 pandemic. Thus, it is clear that effective results are possible with online intervention.
The association between gaming disorder and impulsivity: A systematic review
Authors: Andrade André Luiz Monezi , Lobato Fernanda Beatriz Hodar , Stange Naomi , Scatena Adriana , Oliveira Wanderlei Abadio de , Kim Hyoun S. , Lopes Fernanda Machado
Published: March 2024

Abstract Objective Impulsivity has been robustly linked to various addictions, including behavioral addictions. This systematic review aimed to investigate possible relationships between impulsivity and gaming disorder. Method A total of 1,710 empirical studies, without date or language restrictions, were retrieved from Biblioteca Virtual em Saúde, Cumulative Index to Nursing and Allied Health Literature, PubMed, PsycNET, Scopus, and Web of Science databases. In total, 16 studies met the inclusion criteria and were included for extraction, quantitative analysis, and integrative synthesis. Results Overall, a positive association was observed between gaming disorder and both self-reported measures of impulsivity and behavioral measures of impulsivity. Gaming disorder was associated with the presence of high-risk trends, high sensitivity to rewards, reduced inhibitory control, and low self-control among video game players. Conclusion The present systematic review provides preliminary support for the robust association between impulsivity and gaming disorder. However, given the methodological heterogeneity in assessment instruments and statistical procedures, the identified association should be interpreted cautiously.
O Mal está neste chão: sobre as composições nas práticas de cura karajá e o regime de comunicação dos espíritos
Authors: Nunes Eduardo Soares
Published: March 2024

Resumo Em busca de tratamento para doenças resultantes de acometimento por espíritos, os Karajá, povo indígena centro-brasileiro, recorrem hoje, além de seus próprios xamãs, a xamãs de outras etnias e curandeiros regionais, bem como a sua fé em Deus. E todos esses curadores, a despeito de seus diferentes conhecimentos e técnicas, são considerados igualmente xamãs. Os médicos não indígenas, em contraste, não podem curar esses adoecimentos, e a esses especialistas só se recorre para tratar as ‘doenças de branco’. A diferença marcada entre doenças e especialistas, no último caso, contrasta com o regime de comunicação absoluta no primeiro. É a essa diferença que o artigo se dedica. Dialogando com a antropologia da saúde, por um lado, e com a questão da religião, por outro, proponho que o que permite que curadores de origens diversas tratem pessoas enfeitiçadas, diferentemente dos médicos, é o fato de que o xamanismo atualiza o regime de diferença infinita, ou de transparência absoluta, dos tempos primordiais.
The Vigor-S system as an auxiliary component of the accelerated aging test procedure in soybean seeds
Authors: Ribeiro Gloria de Freitas Rocha , Carmo-Filho Abimael dos Santos , Alves Rafael Mateus , França-Neto José de Barros , Marcos-Filho Julio , Gomes-Junior Francisco Guilhien
Published: March 2024

ABSTRACT: Computerized seedling image analysis is available as a resource for evaluating seed vigor or as an auxiliary component while carrying out different tests. The aim of this study was to evaluate the efficiency of the Vigor-S system for interpretation of the accelerated aging test, rather than setting up the germination test for determination of soybean seed vigor. Nine seed lots of the soybean cultivar NS 7007 IPRO were used, which were tested for germination and vigor (electrical conductivity, accelerated aging, primary root emergence, seedling emergence in the field, and Vigor-S). To check the alternative procedure after accelerated aging, seeds that had been exposed to accelerated aging (the traditional procedure and with saturated salt solution) were placed to germinate; seedling images collected three days after germination at 25 °C were digitalized and analyzed by Vigor-S, obtaining vigor indices, hypocotyl length, primary root length, and total seedling length, which were subsequently compared with the results of the other vigor tests. The Vigor-S analyses made after both procedures of the accelerated aging test allow ranking of the seed lots in regard to vigor, in a way similar to the other tests recommended for soybean seeds, including the seedling emergence test.
Como a pandemia de COVID-19 afetou a notificação de acidentes do trabalho em diferentes atividades econômicas e ocupações no Brasil? Um estudo ecológico usando o p-score
Authors: Santos Júnior Claudio José dos , Antunes José Leopoldo Ferreira , Fischer Frida Marina
Published: March 2024

Resumo Objetivo: mensurar o impacto da pandemia de COVID-19 nas notificações de acidentes do trabalho (AT) no Brasil, por atividade econômica e ocupação. Métodos: estudo ecológico que utilizou os casos de AT registrados entre 2015 e 2020 no Anuário Estatístico da Previdência Social. Os AT foram analisados por setor de atividade econômica, ocupação e códigos da 10ª revisão da Classificação Estatística Internacional de Doenças e Problemas Relacionados à Saúde (CID-10). Uma adaptação do p-score foi aplicada para comparar os casos de AT pré-pandemia com os do primeiro ano da pandemia. Resultados: os p-scores variaram de -60,2%, para AT por nexo técnico epidemiológico, a -13,9%, para AT típico. As doenças do trabalho apresentaram p-score de 151,1%. Houve aumento notável nos casos de doenças ocupacionais dos capítulos I e X da CID-10. As notificações de AT diminuíram em todas as categorias de atividades econômicas, exceto nas de saúde humana e serviços sociais (p-score = 8,0%). Na maioria das categorias, os valores foram negativos, exceto nos subgrupos forças de segurança e profissionais de saúde de nível superior, técnico e gestores. Conclusão: houve redução geral na notificação de AT durante a pandemia de COVID-19 no Brasil, que evidenciou desigualdades entre diferentes setores de atividades e ocupações, além de mudança no perfil de adoecimento dos trabalhadores.
An Investigation On The Effect Of Smartphone Use On Morphological And Radiological Changes Of The Fifth Finger
Authors: Demirkıran Nihat Demirhan , Özmanevra Ramadan , Öner Süleyman Kaan , Kozlu Süleyman , Dülgeroğlu Turan
Published: March 2024

Background: The purpose of this study is to describe the macroscopic and radiological changes on the fifth finger related to mobile phone use and to evaluate the effect of size and weight of the device and the average time spent using the smartphone on these morphological alterations.

Methods: One-hundred and one patient were included in the study. Age, weight, height, education, mobile phone data and digital photographs used in this cross-sectional study were obtained from interviews with the participants in an outpatient orthopedics clinic setting. Digital photographs of the dorsal aspects of both hands were taken with an iPhone X ® (dual 12-megapixel wide camera). The DIP joint angle of the fifth finger was measured on computer software (Image J® version 1.46, National Institute of Health, Bethesda, MD) separately for digital photographs and AP hand X-rays.

Results: The proportion of smartphone usage time over 4 hours was significantly higher in patients with complaints than patients without complaints (p<0.05). The mean time of smartphone use over 4 hours was significantly higher in patients with shape discrepancy than in patients without shape discrepancy (p<0.05).

Conclusion: Smartphone use of more than 4 hours per day, regardless of size and weight, can cause deformity of the fifth finger, which may disturb the patient even if it does not cause radiologically changes.
Correlation of Capillary Tube and Transcutaneous Methods with Serum Biochemistry in Bilirubin Levels in Neonates with Jaundice
Authors: Darka Kazım , Gül Ali
Published: March 2024

Objective: The aim of this study was to compare transcutaneous bilirubin (TcB) measurement, which is a noninvasive, easy, fast and inexpensive method in the treatment of patients with neonatal jaundice, with total serum bilirubin (TSB) measurement values, which is the standard method. Simultaneous capillary tube bilirubin values were also included in the study in terms of correlation. We investigated whether it would be safe to use TcB measurement instead of blood sampling for jaundice assessment.

Materials and Methods: Between January 1, 2023 and July 1, 2023, newborns with gestational jaundice aged 37-42 weeks who were hospitalized with neonatal jaundice were enrolled in the neonatal intensive care unit of Gaziosmanpaşa University Faculty of Medicine (Tokat, Turkey). Patients with confirmed neonatal jaundice were retrospectively analyzed. Patients with antenatal or postnatal disease, ABO-Rh blood group incompatibility, and preterm-post-term neonates were excluded from the study. In addition, those who received phototherapy for the first time and did not have a history of transfusion were included in the study.

Results: All 72 patients were term neonates. The mean gestational age was 37.26 weeks (range, 37-40 weeks) and the mean weight was 2789 ± 15 g (2255-4550 g). Thirty-one (43.1%) of the newborns were male. The direct Coombs test was 1+ in three newborns and 4+ in one newborn. There was a strong correlation between TcB bilirubin levels and TSB values before and after treatment (r = 0.776, p < 0.001; r = 0.773, p < 0.001, respectively). A strong correlation was observed between capillary tube bilirubin and TSB measurement values before and after treatment (r = 0.875, p < 0.001; r = 0.899, p < 0.001, respectively).

Conclusion: In our study, we found a strong correlation between transcutaneous bilirubin measurement, serum bilirubin and capillary tube method performed through the ear before and after phototherapy treatment. However, due to the small size of this study, we cannot recommend the use of transcutaneous measurement alone in making treatment decisions.
Evaluation Of The Frequency, Localization And Relationship Of Maxillary Sinus Pathologies With Dental Pathologies By Cone Beam Computed Tomography (CBCT)
Authors: Haylaz Emre , Geduk Gediz , Şeker Çiğdem
Published: March 2024

Background: The proximity of the root tips of the maxillary posterior teeth to the maxillary sinus causes odontogenic infection to become a potential source of maxillary sinusitis. This study aims to evaluate the relationship between dental pathologies and maxillary sinus abnormalities using cone beam computed tomography (CBCT).

Material and Method: In this study, 300 patients who applied to our clinic for any reason 600 maxillary sinus cone beam computed tomography images of the patient were analyzed retrospectively. Maxillary sinus diseases and dental pathologies categoized among themselves.

Results: The age of all patients ranged between 18 and 77 years, with a mean age of 41.38 (±14.39) years. No pathology was detected in 359 (59.8%) of the maxillary sinuses examined which were considered healthy sinuses. The most common pathology in 241 (40.2%) of the maxillary sinuses in the imaging area was mucosal thickening (MT). A statistically significant relationship was detected between teeth with periapical lesions (PL) and MT (p<0.05). No statistically significant relationship was found between restorative applications, oro-antral fistula (OAF), periodontal bone loss (PBL), and maxillary sinusitis (MS) (p<0.05).

Conclusion: Odontogenic infections and inflammatory events are the causes of maxillary sinus pathologies and may play a role in their formation. CBCT, maxillary posterior teeth and maxillary sinüs in demonstrating the relationship between and in the diagnosis of odontogenous sinus pathlogies is quite useful.
Evaluation Of Clinical And Cost Analysis Of Patients Applying To The Emergency Service With Extensor Tendon Incision In The Upper Extremity
Authors: Yalçın Mehmet Burak , Şener Kemal
Published: March 2024

ABSTRACT
Bacground/Aims:
Hand trauma is common in emergency departments, with approximately 20% of regional traumas involving hand injuries. Extensor tendon lacerations, often caused by sharp objects, are frequently encountered but may be overlooked, leading to significant morbidity. This study aims to retrospectively review cases of extensor tendon lacerations in the upper extremities to highlight the importance of thorough evaluation and management in the emergency department.
Methods:
A single-center retrospective study included 114 patients presenting to the emergency department with extensor tendon lacerations. Data on patient demographics, injury characteristics, treatment, complications, and costs were collected and analyzed. Statistical analysis was performed using SPSS version 26.0.
Results:
The majority of patients were male adults, with sharp objects such as knives being the most common cause of injury. Extensor tendon repairs were predominantly performed in the emergency department, with complications observed in 14.9% of cases. The mean cost of treatment was $255.97. Factors influencing the decision to perform repair in the operating room included patient age, injury characteristics, and associated injuries.
Conclusions:
Extensor tendon lacerations in the upper extremities represent a significant burden in emergency departments. Our findings emphasize the importance of thorough evaluation and timely management to prevent missed diagnoses and optimize patient outcomes. Repairing extensor tendon injuries in the emergency department can be cost-effective and efficient, but careful consideration of patient and injury factors is necessary to determine the most appropriate treatment setting.
Türkiye’s First Multidisciplinary Gene Therapy Education Program: History and Plans for the Future
Authors: Koç Yekedüz Merve , Köse Engin , Erdeve Ömer , Eminoğlu Fatma Tuba
Published: March 2024

Background:
Gene therapy is applied to regulate the functions of mutated or disease-causing genes in human cells and targets nucleotides. Recent years have seen an increasing number of publications reporting successful results from gene therapies, suggesting an increasing scientific curiosity among clinicians.
Methods:
Gene Therapy Symposiums were hosted by the [blinded for review]. The participants answered pre-post-tests, and satisfaction scales.
Results:
A total of 192 participants underwent training, none of whom had previously undergone gene therapy training. Of the sample, 71.9% were female and the median age of the participants was 32 years. Of the total, 84.9% were studying medicine and 15.1% were studying in non-medical fields. Among those studying medicine, 17.2% were students, 18.4% were main specialty research assistants, 38.0% were subspecialty research assistants, 17.2% were specialists and 9.2% were assistant professors/professors. An analysis of the completed pretests revealed that 32.3% had answered the questions correctly, while 58.6% answered the questions correctly after undergoing training. The overall satisfaction score was 91.8 out of 100.
Conclusions:
The results of the pretest revealed the knowledge and awareness of gene therapy among the participants to be low, indicating a need for education programs addressing the subject. Gene therapy has moved beyond the theoretical realm in recent years and is today seeing practical applications. There is an urgent need to train the clinicians and other operatives required for the provision of gene therapies and to develop strategies for tertiary care centers in this field over the next 10 years.
Coalbed methane potential and coal characteristics in the Lati region, Berau basin, East Kalimantan
Authors: Suwarna Nana , Hermanto Bambang , Sihombing Torkis , Kusumah Kusdji Darwin
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol1no1.20063aA geological research was performed in the Berau Basin, to provide a better understanding on the potential and resources of coalbed methane (CBM) in Berau Regency, East Kalimantan Province, particularly in the Lati Coalfield. Field observation conducted in the coalfield, shows that the banded to bright banded Lati coal is dominated by the bright banded one. Petrographically, the coal consists of vitrinite comprising typical telocollinite and desmocollinite; with rare to sparse exinite, and minor inertinite, and mineral matter. Geochemical analysis shows the range of volatile matter content is from 32.65–39.60%, total sulfur from 0.35–3.04%, ash varies between 2.78–14.50%, and moisture from 12.23–19.98%. Vitrinite reflectance values (Rv), varying from 0.42–0.57%, tend to indicate that the Lati coal rank ranges from sub-bituminous B to high volatile bituminous C category, with low ash content in general. Moreover, the coal maturity level, thermally immature to early mature, leads to the assumption that the expected gas present is suggested to be of biogenic origin. The fairly well cleated Lati coal shows cleat orientations trending north - northeastward, perpendicular to nearly oblique to the syncline axis. Furthermore, coal microcleat occurs as open tensional, sub-curved to curved lines microcracks, diagonally to perpendicular to bedding plane, but some are parallel to the bedding plane. An in-situ coal gas calculation tends to indicate a low to moderate methane content level, with a value of 44.20–47.08 scf/t. However, the Q1 plus Q2 calculation exhibits the gas content ranging from 41.69 to 78.71 scf/t. Moreover, total calculated gas in-place of the P, Q, and R Seams =  5.33 m3/t = 191.56 scf/t.
Depositional Cycles of Muara Wahau Coals, Kutai Basin, East Kalimantan
Authors: Anggayana Komang , Rahmad Basuki , Widayat Agus Haris
Published: March 2024

http://dx.doi.org/10.17014/ijog.v1i2.183Fifteen samples were taken ply by ply from a 33 m thick drill core of Muara Wahau coal seams for interpretation of depositional environments. Generally, lithotype variation in the bottom part of the coal seams has a lower frequency than in the upper part. Petrographical analysis was performed to determine the maceral composition, groundwater index (GWI), and gelification index (GI). The samples from lower sections show much higher GWI-GI values and lower variation frequency than from the upper section. This characteristic is interpreted as the result of development of mesotrophic to ombrotrophic peats during the deposition of lower to upper parts of the section, respectively. During the development of the mesotrophic peat, water was more abundant and relatively stable in budget. However, during the development of ombrotrophic peat, water was less abundant and relatively not stable in budget. The latter is related to the water supply depending only on rain, resulted in the more sensitive water table in the om- brotrophic peat. The unstable water table is thought as the reason of higher variation frequency of lithotype, GWI, GI, as well as maceral composition in the upper part of the core. Unstable water table would lead to moist condition in the uppermost layer of the ombrotrophic peat, favoring fungi to grow. This is confirmed by the higher abundance of sclerotinite maceral in samples from the upper part of the coal core.
Fasies gunung api dan aplikasinya
Authors: Bronto Sutikno
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol1no2.20061Based on the nature and rock association, a composite volcanic cone can be divided into central facies, proximal facies, medial facies and distal facies. Physiographically, those begin from central eruption at the summit, going down to upper slope, lower slope, and foot plain in the surrounding area. Central facies is characterized by the presence of subvolcanic intrusions, lava domes, and hydrothermally altered rocks. Proximal facies consists of alternating lava fl ows and pyroclastic breccias. Medial fasies mainly is composed of pyroclastic breccias, laharic breccias, and conglomerates. Whereas, distal facies is dominated by fi ne-grained epiclastic rocks having sand to clay size. Tuff can be widely distributed from proximal to distal facies due to its fi ne grain and lightness. Methodological approachs for classifi cation of volcanic facies in Tertiary and older rocks are remote sensing and geomorphology, volcanic stratigraphy, physical volcanology, structural geology, and petrology-geochemistry. This volcanic facies division is useful for supporting new discovery on energy and mineral resources, environmental geology, and geologic hazard mitigation.
Seasonal variation of δ13C content in Porites coral from Simeulue Island waters for the period of 1993-2007
Authors: Cahyarini Sri Yudawati
Published: March 2024

DOI: 10.17014/ijog.v1i2.179Variation of δ13C content in coral skeletons shows the influence of metabolic fractionation in aragonite coral. Understanding coral δ13C variation can thus be useful to more understand e.g. past bleaching event which is further useful for coral health and conservation. In this study, δ13C content in Porites coral from Labuhan Bajau, Simeulue Islands was analyzed. To know the correlation between variation of coral δ13C and light intensity, the monthly variation of coral δ13C is compared to solar radiation and cloud cover. The result shows that for the period of 2003 to 2008, coral δ13C shows it is well correlated (r=0.42 p=0.153) with cloud cover variation in annual mean scale. Meanwhile, in seasonal mean variation, coral δ13C is strongly influenced (r=0.85 p<0.0001) by cloud cover with 1 - 2 month time lag. Comparing to the solar radiation (cloud cover), SST influences dominantly the variation of coral δ13C from southern Simeulue Island waters (LB sample) in an annual mean scale than in a seasonal scale.
Geokimia regional Sulawesi bagian Utara percontoh endapan sungai aktif -80 mesh
Authors: Suprapto Sabtanto Joko
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol1no2.20062Geochemical investigation using the analysis method of -80 mesh of active stream sediment samples is one of the early phase exploration especially in fi nding out metallic mineral deposits. These deposits either as outcrop or as being still in subsurface, can be revealed in geochemical output data. Despite for determination of the availability of mineral deposits, elements distribution of stream sediment samples, can be used to determine the initial and last appearance of geological and situated in environmental condition of an area. Northern part of Sulawesi with its complex geologic setting and a metallogenic region is being potential to form metallic deposits, which create some variation and interesting geochemical performances. The regional geochemistry data by means in the form of elements distribution maps represent the basic important information of mineralization indications, which enable for detail follow up investigation.
Reservoir Modeling of Carbonate on Fika Field: The Challenge to Capture the Complexity of Rock and Oil Types
Authors: Adji Erawati Fitriyani , Asrul Febrian , Arham M. Aidil , Wisnubroto Bayu
Published: March 2024

DOI: 10.17014/ijog.v1i2.181The carbonate on Fika Field has a special character, because it grew above a basement high with the thickness and internal character variation. To develop the field, a proper geological model which can be used in reservoir simulation was needed. This model has to represent the complexity of the rock type and the variety of oil types among the clusters. Creating this model was challenging due to the heterogeneity of the Baturaja Formation (BRF): Early Miocene reef, carbonate platform, and breccia conglomerate grew up above the basement with a variety of thickness and quality distributions. The reservoir thickness varies between 23 - 600 ft and 3D seismic frequency ranges from 1 - 80 Hz with 25 Hz dominant frequency. Structurally, the Fika Field has a high basement slope, which has an impact on the flow unit layering slope. Based on production data, each area shows different characteristics and performance: some areas have high water cut and low cumulative production. Oil properties from several clusters also vary in wax content. The wax content can potentially build up a deposit inside tubing and flow-line, resulted in a possible disturbance to the operation. Five well cores were analyzed, including thin section and XRD. Seven check-shot data and 3D seismic Pre-Stack Time Migration (PSTM) were available with limited seismic resolution. A seismic analysis was done after well seismic tie was completed. This analysis included paleogeography, depth structure map, and distribution of reservoir and basement. Core and log data generated facies carbonate distribution and rock typing, defining properties for log analysis and permeability prediction for each zone. An Sw prediction for each well was created by J-function analysis. This elaborates capillary pressure from core data, so it is very similar to the real conditions. Different stages of the initial model were done i.e. scale-up properties, data analysis, variogram modeling, and then the properties were distributed using the geostatistic method. Finally, after G&G collaborated with petrophysicists and reservoir engineers to complete their integrated analysis, a geological model was finally created. After that, material balance was needed to confirm reserve calculations. The result of OOIP (Original Oil in Place) and OGIP (Original Gas in Place) were confirmed, because it was similar to the production data and reservoir pressure. The model was then ready to be used in reservoir simulation.
Dinamika pengendapan lahar permukaan pada alur-alur lembah di bagian selatan Gunung Api Merapi, Yogyakarta
Authors: Mulyaningsih Sri , Sampurno Sampurno , Zaim Yahdi , Puradimaja Deny Juanda , Bronto Sutikno
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol1no3.20062Endapan aliran rombakan Gunung Api Merapi, yang lebih dikenal sebagai lahar, terbentuk dari hasil longsoran endapan awan panas yang dipicu oleh curah hujan yang sangat tinggi. Pada saat ini, endapan awan panas tersebut berasal dari guguran kubah lava. Material suspensi tersebut selanjutnya menuruni lereng dengan kecepatan yang tinggi, menghasilkan aliran turbulen. Aliran tersebut biasanya berkembang pada daerah dengan perbedaan morfologi berkemiringan lereng tinggi ke landai, atau yang sering dikenal sebagai daerah tekuk lereng. Studi ini didasarkan pada pengamatan dan pengukuran fragmen lahar yang berukuran besar di permukaan. Analisis meliputi arah penyirapan, bentuk, dan besar butir fragmen. Hasil penelitian mendapatkan model arah aliran fragmen besar lahar dari bagian atas aliran rombakan, yang membentuk “model punggung katak” atau “model punggung gajah”. Bagian depan katak atau gajah (kepala) yaitu arah aliran atau bagian depan aliran. Hasil penelitian juga menunjukkan bahwa model tersebut berlaku pada fragmen dengan diameter 90 cm atau lebih besar. Di daerah penelitian, fragmen dengan diameter 90 cm mencapai jarak hingga 22 km dari sumbernya. Hasil penelitian ini dapat digunakan sebagai model untuk menentukan arah aliran lahar (aliran rombakan) purba yang sumbernya belum diketahui.
Karakteristik mineralisasi epitermal di Daerah Taran, Hulu Kahayan, Kalimantan Tengah berdasarkan studi mikroskopis, X-Ray Diffraction (XRD), dan inklusi fluida
Authors: Herman Danny Zulkifli
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol1no3.20064Taran area is occupied predominantly by piroclastic rocks and locally intercalations of lenticular claystones and sandstones. The pyroclastic rocks are intruded by diorite, dacite and andesite, leading alteration and mineralization within the host rocks. Mineralization occurs as a vein type and is associated with a number of pervasive alteration types named respectively: quartz-illite- montmorillonite-kaolinite ± pyrite, quartz-illite ± pyrite, quartz-illite-chlorite ± pyrite and quartz- kaolinite-illite ± pyrite. On the other hand, a propylitic alteration also occurs within the andesite intrusion composed of calcite-epidote-chlorite-sericite-quartz ± pyrite. The mineralization is characterized by several zones of quartz stockwork containing gold and associated ore minerals of chalcopyrite, sphalerite, galena, pyrite and argentite. The quartz veins occurs as fi llings of structural openings in the form of milky quartz and amethyst with textures of sugary, comb, and dogteeth. Evaluation work on results of microscopic (petrography and mineragraphy), X-Ray Diffraction (XRD), and fl uid inclusion studies, and chemical analysis of entirely altered rock/quartz vein samples shows that the alteration and mineralization process were closely related to a change of hydrothermal fl uids, from near neutral into acid conditions at a temperature range of >290o – 100oC. The appearances of quartz variation indicate a relationship with repeated episodes of boiling in an epithermal system, as ground water mixed with hot vapor originated from a remained post-magmatic solution. Corresponding to a salinity of average 1,388 equiv.wt.% NaCl, it indicates that the ore minerals bearing quartz veins were deposited at a depth range of 640 – 1020 m beneath paleosurface.
Permasalahan dan Strategi Pembangunan Lingkungan Berkelanjutan Studi Kasus: Cekungan Bandung
Authors: Wangsaatmaja Setiawan , Sabar Arwin , Prasetiati Maria Angela
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol1no3.20065Environmental problems occurring in the Bandung Basin are resulted from improper management pertaining to land and spatial planning, including landuse policy and control. Arising environmental problems are covering disturbance of watershed hydrological function, surface and groundwater quality and quantity, solid waste, and air quality. Environmental studies in the Bandung Basin have been implemented by landuse change interpretation, surface water regime measurements, water quality, solid waste management, and air quality. Landuse change has occurred where some vegetation areas, such as forests and paddy fi elds, have decreased for 54% in one hand, and developed area has increased into 223% in the other hand. Watershed degradation is indicated by run off coeffi cient increasing from 0.3 in 1950 to 0.55 in 1998. Flow regime has also changed by presence of a maximum extreme discharge increasing tendency from 217.9 m3/sec in 1951 to 285.8 m3/sec in 1998, and minimum extreme discharge decreasing tendency from 6.35 m3/sec in 1951 to 5.7 m3/sec in 1998. Groundwater productivity index continued decreasing from 0.1 million m3/unit in 1900 to 0.0188 million m3/unit in 2002. Environmental problem has also occurred in a solid waste management sector where an average level of service is only 43.7%, and air pollution by motor vehicle and industrial emission, such as PM10, NOx, CO2, SO2, Pb, and acid rain phenomena have also occurred. Fresh water supply level of service in the Bandung Basin only covers 43% of the total needs. Watershed degradation occurring in the Basin needs a management system recovery, administrative based-management that shifted to ecological based integrated watershed management. Effort and strategy required include the policy and institutional reassembling, pollution control, land rehabilitation and conservation, and community empowerment.
Peningkatan kegiatan Gunung Api Tangkubanparahu Jawa Barat pada bulan April 2005
Authors: Dana Isya Nurrahmat , Kadarsetia Eka , Primulyana Sofyan , Hendrasto Muhammad , Nasution Asnawir
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol1no4.20063Tangkubanparahu is an active strato volcano located in West Java lying about 30 km to the north of Bandung City. Its crest is 2084 m above the sea level. In order to gain a better understanding on volcanism and magmatism of this volcano, various research and monitoring have been carried out, such as geochemistry and geophysics. Chemical composition of volcanic gases collected from the Ratu Crater (950 C in 1994, 1997, 1998 ratio of CO /H S, CO /H , and H /Ar, is suggested to indicate the presence of a fast fl uid movement and 2005, shows that the gas is hydrous with the main component of H O, CO , H S and small amount SO ; where CO content is higher than (SO + H S). The gas composition showing high of value from the depth before condensed at the shallow surface water area. Hotspring from the Domas Crater contains a high concentration of SO , low of Cl and absence of H CO . The high sulphate content is suggested to be originated from the volcanic gases, especially hydrogen sulphide oxydated near the surface, that then the gas infl uenced chemical composition due to shallow water.Continuous seismic monitoring uses one permanent station, while the other methods like Electric Distance Measurement (EDM), Global Positioning System (GPS) and Seismometer have been installed temporary. From geophysical evidence on April 2005 activity, some valuable information can be obtained. Hypocenter is located at the depth less than 2 km beneath an area between the Ratu and Domas Craters, while pressure source of deformation is below Domas Crater. Some low frequency volcanoquakes is possibly caused by volcanic gases released from the reservoir.
Mekanisme erupsi ignimbrit Kaldera Maninjau, Sumatera Barat
Authors: Pribadi Agung , Mulyadi Eddy , Pratomo Indyo
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol2no1.20073Maninjau is a large collapsed caldera that was resulted from a large eruption of silicic pyroclastic material (220-250 km3), and was distributed to more than 75 km away from the source. Field observations have provided a good understanding to the eruptive mechanism of the Maninjau caldera formation, in respect to their stratigraphy, sedimentology and geochronology of the eruptive products. Two formations have been identifi ed, those are: the Maninjau Formation, comprising a sequence of ignimbrite and surge units erupted from the Maninjau Caldera, and the Malalak Formation as a prominent andesitic fall unit likely derived from the Singgalang - Tandikat Volcano that overlies the Maninjau Formation. The variable velocity of the fl ows suggests that the Maninjau eruption initiated by violent. The later phases of the eruption became more violent and associated with caldera collapse.
Gunung api maar di Semenanjung Muria
Authors: Bronto Sutikno , Mulyaningsih Sri
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol2no1.20074Three maars are well identifi ed in the Muria Peninsula, i.e. Bambang Maar, Gunungrowo Maar, and Gembong Maar. The maars were formed by monogenetic volcanic eruptions due to the interaction between heat source (magma), groundwater and calcareous basement rocks. This interaction is able to produce very high pressure of gas and steam causing phreatic explosions, followed by phreatomagmatic- or even magmatic explosions and ended by a lava extrusion. Satellite image analyses have recognized twelve circular features, comprising Bambang Maar, Gunungrowo Maar, and Gembaong Maar. Phisiographically, these maars are characterized by circular depressions which are surrounded by hills that are gently sloping down away from the crater or having a radier pattern morphology. Outcrops and drilling core in the circular areas that are considered as volcanic maars are lava fl ows, pyroclastic breccias, lapillistones, and tuffs, located far away from the eruption centres of Muria and Genuk Volcanoes. One of the circular features, i.e. Jepara Circular Feature, is also supported by negative anomaly (<30 mgal) showing a circular pattern. In the future, a maar volcano could possibly erupt depending on the tectonic reactivity in the region.
Kemungkinan sebaran zirkon pada endapan placer di Pulau Kalimantan
Authors: Herman Danny Zulkifli
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol2no2.20073Most alluvium with valued heavy minerals originated from regions of continental shelf, from which recycle process for stable minerals play an important role in transportation and final concentration formation of the minerals. Kalimantan Island as part of continental shelf has a great opportunity to provide condition or environment for placer deposition with zircon content due to: comprising particularly basement rock of calc-alkali to alkali series (granite, granodiorite, tonalite and monzonite) which were suggested as the main supplier sources of zircon; having a long period of regional stability as main contribution in continuation processes of weathering, transportation and forming deposition environment of alluvium and located within a tropical climate with high humidity from which mechanical and chemical weathering processes play an important role in releasing zircon from its source rocks. Continental placer deposit of fluvial sub-environment category is suggested to have possibility to form deposition zone lying between the mountains and the seas, reaching over wide areas and forming huge volume reservoirs with content of zircon. Based on zircon identification (associated with gold or diamond) of placer pan concentrates at some areas of West Kalimantan and Central Kalimantan, these have proved how widespread of zircon deposition within fluvial sub-environments in both regions. This important information inspires an opportunity to do exploration of placer zircon deposits within fluvial sub-environments in entirely Kalimantan Island, without neglecting to the transition placer of strandline sub-environment category and marine environment which enable to have an economic deposit of zircon.