bluuebunny/crossref_metadata_2025 huggingface dataset:
A Study on Understanding the Changing Diaspora and Virtual Communities through Digitalization
Authors: Bolat Nursel , Çakın Ömer , Sirer Esennur
Published: March 2024

This article contains a research study within the framework of the diaspora approach, focusing on the connection of the Circassian community, which had to leave the Caucasus during the Tsarist Russia period in the 1860s and settle in Turkey, their new homeland. Although various definitions exist, the concept of diaspora is generally used to describe people who were forcibly separated from their homelands during historical processes and settled in at least two countries. With the advent of the digital age, the diaspora concept has evolved, particularly in terms of diaspora communities, as communication tools with the homeland have improved, and social and geographical mobility has changed through virtual communication platforms. In a physical sense, it enables access to numerous resources, such as maintaining connections with the homeland and diaspora members who are physically distant. Diasporic communities can create virtual communities, collaborate, and establish cultural connections through new media. Although this process has not yet spread to every aspect of life, initial steps have been taken through communication initiated by Caucasian Associations. The digital realm adds a digital dimension to the concept of diaspora. In this context, the virtual communities established by Circassians living in Turkey with their homelands in the Caucasus are examined through in-depth interviews with key figures from Caucasian Associations in the diaspora and participants from the homeland.
Empire after Empire: Military Legacy and the Creation of Nation States
Authors: Lapin Vladimir
Published: March 2024

This article considers the transfer of the military imperial heritage into new hands after 1917, which was especially in demand since this transition took place in an environment of aggravated political, ethnic, and religious conflicts. The most important role in this process was played by the bearers of army practices – soldiers, officers, and generals of various nationalities. A long war was accompanied by a separation of command personnel: military leaders who had not proved their professional worth gave up leadership positions to those who had proved themselves better in leading troops. Breaking the established hierarchical patterns, the turbulence of the revolutionary era allowed many ambitious and talented military leaders to occupy high positions, which was impossible in normal circumstances. The high administrative burden that lay on the generals and officers of the Russian imperial army and the experience of running a military economy prepared them for the role of statesmen in the new states that arose from the ruins of the Russian Empire. Military reserves concentrated in front-line areas made it possible to resolve issues of material support for the national armed forces.
Georgian National Idea in the Tiflis Seminary of the Post-Reform Time: The Optics of the Russian Language and Literature
Authors: Safronova Julia
Published: March 2024

This article examines the case of seminarian David Kezeli who compiled the anti-Russian proclamation To the New Generation of Georgia, confiscated in December 1873. Although the St Petersburg and Caucasian authorities interpreted the case differently, they were united in their inattention to the situation of the Tiflis Theological Seminary. The internal problems of the theological educational institution, including the problem of the disloyalty of the “native” teachers, were to be solved by the officials of the Synod’s Educational Committee and the Exarch of Georgia. The author aims to show the ambivalence of the anti-Russian views of the Georgian seminarians and analyse the Kezeli case as part of the processes in religious education initiated by the 1867 reform. Special attention is paid to the discussion about the establishment of the Georgian language class, the idea of which either led to a consensus among the teachers or to a confrontation described in the Synod documents as a struggle between the Russian and Georgian “parties”. The origins and limitations of anti-Russian sentiments among seminarians are considered in relation to conflicts among teachers, the rules of access to educational and extracurricular literature, and the status of the Russian and Georgian languages. The author concludes that in the first years after the reform, young graduates of the theological academies were inspired by the opportunity to change the content of theological education by introducing the achievements of modern science into it. This goal united teachers of Russian and Georgian origin. They worked together both on projects for Georgian language classes and on compiling lists of advanced literature to be purchased for the student library. Georgian teachers, such as Jacob Gogebashvili, were prepared to become conduits of “human Russification”, arguing that only the Russian language allowed their students to access modern science. The transformation of interaction into conflict, which took on the form of a confrontation between the Russian and Georgian “parties” in the seminary, was explained on both sides by its participants’ personal ambitions. They were fighting for power and money, not for the promotion of the Georgian national idea or the defence of Russian interests in the region. David Kezeli was wholly a product of this situation. After completing his studies at the theological school and moving to the seminary, he felt hostility towards his teachers, seeing in them “Famusovs” who were trying to educate him as a “Molchalin”, while he was constructing himself as a “Bazarov”, the only “nihilist” in Georgia. The anachronism of Kezeli’s “nihilistic” identity emphasises his attachment to the generation of “fathers” who determined the literature available to him and provided him with a tool to master it, i. e. the Russian language.
Leonid Shvartsman: An Artistic Reading of the Petersburg Tales by Nikolai Gogol
Authors: Alekseev Evgeny
Published: March 2024

This article analyses little-known works by artist L. A. Shvartsman (1920–2022) based on the Petersburg Tales by N. V. Gogol. The works from private collections created in 1953–1956 did not attract the attention of researchers at the time, whereas the appeal to the characters of The Overcoat, Portrait, and Nevsky Prospekt was an important stage for Shvartsman in the formation of a personal artistic programme. His studies at the art school at the All-Union Academy of Arts (1937–1941) determined his attitude to classical art and influenced the emotional perception of St Petersburg. The atmosphere of the “thaw” contributed to the master’s appeal to the unsettled life of a “little man”, defenceless in the face of power and a rude crowd. Having achieved fame as an animation film production designer by the mid‑1950s, Shvartsman sought to build his own system of translating verbal language into visual language outside the film production system, independently solving the creative tasks set. By calling his works “illustrations”, the master did not mean a book illustration, for which it is necessary to initially think over the design and style of the publication. The artist went from full-scale sketches, developed colouristic approaches and strove for the self-sufficiency of each work, hence the noticeable easel character of his works. At the same time, they also have expressive images inherent in sketches of animated films, stylised figures, a sense of action that logically develops and is predicted. The artist approached Gogol’s text selectively, focusing on the life and characters of the heroes, on the originality of the St Petersburg environment. He is interested in the image of Akaky Akakievich, moderately funny and ridiculous, but attractive in his fixation on rewriting papers – a matter which he treats with inspiration, with full dedication. Shvartsman did not want to dramatise situations, avoided climaxes, being satisfied with fixing the temptations of life, which, in the end, would lead the characters to a sad ending. In the process of artistic reading of the Petersburg Tales, Shvartsman not only developed expressive images and compositions, but also built his own creative worldview with moral guidelines and rules.
Peculiarities of acute myocardial infarction course and distribution of the somatostatin receptor analogue 99mTc-octreotide in the heart
Authors: Ryabov V. V. , Syrkina A. G. , Trusov A. A. , Mishkina A. I. , Sazonova S. I. , Ilyushenkova Yu. N.
Published: March 2024

Aim. To study the relationship between the clinical course of myocardial infarction (MI) with changes in left ventricular (LV) geometry and myocardial accumulation of the somatostatin analogue 99mTc-octreotide according to cardiac single-photon emission computed tomography (SPECT).

Material and methods. This pilot, cohort, prospective study included 14 patients aged 37 to 72 years with primary anterior ST-segment elevation MI. Patients underwent a general clinical examination, 3-fold determination of high-sensitivity C-reactive protein (hsCRP), echocardiography on days 1-3, cardiac SPECT with 99mTc-octreotide on days 6-7 from MI onset. Statistical analysis was performed using STATISTICA 10.0, StatSoft, USA.

Results. In 10 of 14 patients, 99mTc-octreotide accumulation in LV involvement area was recorded. The accumulation analysis showed varying intensity. This made it possible to form two subgroups with high and low accumulation of 99mTc-octreotide (heart-to-cavity LV ratio more and less than 1,5, respectively).

Clinical characteristics and MI course, length of hospital stay did not differ between the subgroups. Occlusion of the infarct-related coronary artery (in 5 (62,5%) vs 0 (0%) patients, p=0,016) was more common in the group with increased versus decreased accumulation of 99mTc-octreotide, respectively.

Laboratory analysis showed a significant increase in hsCRP upon admission in patients with increased vs decreased accumulation of 99mTc-octreotide — 31,6 mg/l (10,45-42,05) vs 6,5 mg/l (3,2-11,8), p=0,043, respectively.

A significant increase in end-diastolic and end-systolic LV volumes was established. There were an increase in LV sphericity index and local contractility disruption index along with a decrease in LV ejection fraction in the subgroup with high vs reduced accumulation of 99mTc-octreotide (47,5% (45,5-51,5) vs 57,5% (54-59), p=0,020) in the damage zone, respectively. In addition, a predictive relationship between the increase in LV end-diastolic volume and the severity of 99mTc-octreotide accumulation was found (R2=0,601, F-ratio=16,562, p=0,002).

Conclusion. An increase in hsCRP and early initiation of LV remodeling after primary anterior ST-segment elevation MI is accompanied by a pronounced accumulation of 99mTc-octreotide in the damage zone, detected using cardiac SPECT, as a result of systemic and local, in our opinion, macrophage-mediated post-infarction inflammation.
Combination of Takotsubo cardiomyopathy with cardiac myxoma: a case report
Authors: Galeeva Z. M. , Galyavich A. S. , Baleeva L. V. , Sabirzyanova A. A. , Yakupova D. T.
Published: March 2024

Introduction. In the Russian literature, we have not found data on the combination of takotsubo syndrome (TTS) and left atrial (LA) myxoma. The work analyzed our own clinical case. TTS is diagnosed in 1,0-2,5% of patients hospitalized with suspected acute coronary syndrome (ACS). Primary cardiac tumors occur in cardiology with a frequency of up to 0,2%. The most common of them are LA myxoma.

Brief description. The patient was admitted to the clinic with suspected ACS. During the diagnostic search, both ACS and acute myocarditis were ruled out. An incidental finding during an echocardiographic study was LA myxoma.

Discussion. Due to a stressful situation, the patient developed symptoms similar to myocardial infarction. Based on coronary angiography data (normal coronary arteries, rapid restoration of myocardial contractility, no characteristic myocardial changes, myocardial infarction and acute myocarditis were excluded and TTS was established. LA myxoma was an unexpected finding.

Myxoma may contribute to TTS, presumably through central mechanisms regulating the activity of the cardiovascular system. Also important is the systemic inflammation caused by myxoma, which reduces the threshold for the development of Takotsubo cardiomyopathy in response to stress factors.
The role of psycho-emotional factors in assessing the prognosis of different types of myocardial infarction
Authors: Kinash V. I. , Kashtalap V. V. , Vorobiev A. S. , Urvantseva I. A. , Kovalenko L. V.
Published: March 2024

Aim. To study the features of psycho-emotional status and its clinical and prognostic significance in patients with type 1 and 2 myocardial infarction (MI).

Material and methods. Of the 1293 patients hospitalized at the District Cardiology Dispensary "Center for Diagnostics and Cardiovascular Surgery" with a diagnosis of acute coronary syndrome, 277 (21,4%) patients with confirmed MI were consecutively included in the observational study. There were 194 (15,0%) patients with type 1 MI (MI1) and 83 (6,4%) with type 2 MI (MI2). MI types were determined based on the IV Universal Definition of Myocardial Infarction (UDMI). During the hospital period, type D personality was identified using the Russian version of the Type D scale-14 (DS-14), while the presence and severity of anxiety and depression was assessed using the Hospital Anxiety and Depression Scale (HADS). Follow-up was conducted through outpatient visits, telephone or email interviews for 12 months after discharge. Patients' adherence to drug therapy was assessed using 8-item Morisky Medication Adherence Scale, and quality of life (QoL) using Short Form Medical Outcomes Study (SF-36) questionnaire.

Results. During the hospital period, in the group of patients with MI2, patients with type D personality were more often identified compared with MI1 (30 (36,1%) vs 55 (28,3%), p<0,05). Patients with MI2 had a significantly higher subclinical level of anxiety (34 (41,0%) vs 43 (22,2%), p=0,002), expressed level of anxiety (10 (12,1%) vs 12 (6,2%), p=0,011), as well as a significant level of depression (13 (15,7%) vs 14 (7,2%), p=0,03). At the same time, in patients with type D, regardless of MI type, subclinical levels of anxiety and depression were significantly expressed (63 (74,1%) vs 14 (7,3%) (p<0,001) and 58 (68,2%) vs 25 (13,0%) (p<0,001)). There were no significant differences in inhospital complications between the MI1 and MI2 groups depending on type D personality. After 12-month follow-up, patients with the distressed personality type had higher rate of all-cause death (5 (7,2%) vs 5 (1,6%), p<0,05 without type D), rehospitalization for decompensated heart failure (8 (11,5%) vs 9 (4,8%), p=0,04). Patients with type D were less adherent to drug therapy compared to patients without type D (30 (43,4%) vs 9 (4,8%) p=0,001, respectively), and they had lower QoL scores.

Conclusion. Type D personality, the presence of anxiety and depression, high all-cause mortality and rehospitalization rate of decompensated heart failure were more often observed in MI2 compared to MI1, as well as in patients with type D, regardless of MI type. Low adherence to drug therapy and poor quality of life, regardless of MI type, were also associated with the type D personality.
Application of intravascular physiology methods in clinical practice: two-year data from the Russian registry
Authors: Demin V. V. , Babunashvili A. M. , Kislukhin T. V. , Kostyrin E. Yu. , Shugushev Z. Kh. , Ardeev V. N. , Merkulov E. V. , Matchin Yu. G. , Gubarenko E. Yu. , Kochergin N. A. , Semitko S. P. , Anufriev A. A. , Ter-Akopyan A. V. , Teplyakov D. V. , Zauralov O. E. , Arutyunyan G. K , Atanesyan R. F. , Asadov D. A. , Ignatov V. A. , Azarov A. V.
Published: March 2024

Aim. To analyze the use in clinical practice of intravascular coronary assessment methods based on two-year data from the Russian Registry on the Use of Intravascular Imaging and Physiology.

Material and methods. Since 2021, the Russian Registry on the Use of Intravascular Imaging and Physiology has included data from 7967 studies in 3932 patients, of which 3086 (38,7%) were studies of intravascular physiology. In 2021, 13 branches from 9 cities participated in the registry, in 2022 — 20 branches from 11 cities. For chronic coronary artery disease, 2484 (80,5%) studies were performed, for acute coronary syndrome (ACS) — 598 (19,4%).

Results. In 2022, the registry included 1,9 times more intravascular functional studies compared to 2021. The contribution of different clinics was uneven — 75,7% of studies were performed in three departments. The use of non-hyperemic indexes prevailed over hyperemic ones (58%), and in ACS they were used three times more often. All coronary arteries were examined, most often the anterior descending artery. As a primary diagnosis, 1968 (63,8%) studies were performed, while for the purpose of dynamic control — 122 (3,9%), at the surgical stage — 996 (32,3%). In 85,5% (n=2638) of observations, the functional assessment of stenosis hemodynamic significance directly influenced the treatment tactics.

Conclusion. The registry data indicate the significant role of functional methods among intravascular diagnostic options in the practice of domestic clinics participating in the registry. The registry demonstrated their use as a primary diagnosis 2 times more often than for coronary artery stenting. Some indications for the active use of intravascular physiology methods (in acute coronary syndrome, left coronary artery involvement) are currently controversial and require further research.
Psychosocial risk factors for cardiovascular disease: vital exhaustion and its associations with biochemical markers of inflammation among persons 25-44 years old
Authors: Gafarov V. V. , Gromova E. A. , Kashtanova E. V. , Denisova D. V. , Gagulin I. V. , Polonskaya Y. V. , Gafarova A. V. , Ragino Yu. I.
Published: March 2024

Aim. To study the association of interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α), and monocyte chemoattractant protein-1 (MCP-1) levels with vital exhaustion (VE) among men and women aged 25-44 years in Novosibirsk.

Material and methods. At the Research Institute of Internal and Preventive Medicine (Novosibirsk), during 2013-2016, a cross-sectional survey of a random representative sample of people aged 25-44 years in one of the typical districts of Novosibirsk was carried out. A total of 975 individuals were examined (403 men, 530 women). The response rate was 71%. General examination and history collection were carried out according to standard methods included in the WHO program "MONICA-psychosocial (MOPSY)". All study participants completed the Maastricht Vital Exhaustion Questionnaire (MQ).

Results. High and medium VE prevailed among women (15,7% and 40,6%) than among men (5,5% and 32,8%) (p<0,001). Median serum levels of IL-6 were high VE among both sexes 1,41 [0,70;4,60] pg/ml, compared with medium VE 1,20 [0,65;2,90] pg/ml, and low VE 1,12 [0,58;2,32] pg/ml (p<0,01), and among women with high VE 1,53 [0,72;4,33] pg/ml, compared with medium VE 1,14 [0,63;2,36] pg/ml and low VE 0,95 [0,50;1,98] pg/ml (p<0,05). Serum TNF-α was higher among women with high VE (6,01±3,23 pg/ml) than with medium VE (5,63±4,16 pg/ml) and low VE (4,95±2,85 pg/ml) (p=0,025). Mean serum MCP-1 levels among both sexes, men and women, were higher with high VE (324,55±161,89 pg/ml, 270,75±107,92 pg/ml and 338,81±171,1 pg/ml) than with medium (251,78±123,4 pg/ml, 262,46±134,9 pg/ml and 245,22±115,61 pg/ml), and low VE (227,59±101,03 pg/ml, 234,51±104,53 pg/ml and 220,17±96,81 pg/ml) (p<0,001).

Conclusion. An increase in the average levels of inflammation biochemical markers (IL-6, TNF-α, MCP-1) was established in individuals 25-44 years old with a high VE.
Entertaining Politics O uso do humor pela Iniciativa Liberal como estratégia de campanha política nas Europeias e Legislativas de 2019
Authors: Matos Marco Monteiro , Ribeiro Vasco
Published: March 2024

Nas últimas décadas, a fronteira entre o entretenimento e a política têm vindo a estreitar-se, devido ao uso crescente de técnicas do campo do entretenimento por políticos e partidos políticos para apelar ao voto. O presente trabalho estuda o uso deste tipo de táticas pelo partido Iniciativa Liberal, nas Europeias e Legislativas de 2019, de forma a perceber como este partido emergente utilizou o humor para conseguir a atenção do seu potencial eleitorado. Na investigação é aplicada uma análise semiótica a um corpus constituído por alguns dos outdoors utilizados pelo partido em 2019. Os resultados apontam para um uso da analogia à cultura popular e da sátira na construção do humor. Estas técnicas foram usadas como forma de diferenciação de outros partidos políticos portugueses, assim como para clarificar as posições do partido em frases memoráveis. O humor foi ainda usado para ajudar o eleitorado a libertar tensão face a problemas da politica nacional, contribuindo para a criação de um vínculo emocional a partir do riso.
representation of borders as historic liminal spaces in digital games
Authors: Ferreira Cátia , Ganito Carla
Published: March 2024

Digital games are one of the most engaging forms of media. Players can have a first-hand experience and the possibility of feeling immersed within a digital setting where agency is exerted. This paper seeks to understand the role of digital games as new means of communication and their potential to convey messages that may defy gamers to question the moral grand narratives that shape contemporary societies.

In a moment when many countries have opted to close or limit the circulation in their borders, it is important to think about the role played by the border as a historic liminal entity for the representation of societies and communities, distinguishing those who belong from those who do not. The representation of the border in digital games have tended to follow one of the main tropes explored in other media: the border as a physical space that set boundaries between different nations and different regions of the world. In order to assert the potential of digital games to offer a more comprehensive representation of the border as a liminal space, the case of Papers, Please! (Lucas Pope, 2013) will be analyzed.

Based on a qualitative methodology, having content analysis as primary data collection method, the paper intends to contribute to the discussion on how history may narrativized and, eventually, reinterpreted in digital games. Papers, Please! analysis will be centered on the relationship that is set between player and border, that is presented as a liminal space where the game’s action takes places entirely. Moreover, the paper intends to discuss the role that has been played by digital games in the representation of serious topics and how they have evolved as communication tools beyond their role as entertainment products.
A presença de Majorana na física contemporânea
Authors: Santos Carlos Alberto dos
Published: March 2024

Apresenta-se neste trabalho uma abordagem da vida científica de Ettore Majorana com o objetivo de fornecer subsídios para transposições didáticas durante cursos de bacharelado e licenciatura em física, bem como durante cursos de mestrado acadêmico ou profissional em ensino de física. São discutidas especialmente as contribuições de Majorana para a formulação da teoria da interação forte e para a revisão da teoria de Dirac, com o consequente surgimento do neutrino de Majorana e dos férmions de Majorana. Também são apresentados os resultados obtidos por Majorana em 1932, e que foram usados por Rabi no artigo que é considerado como a origem da ressonância magnética nuclear.
Elderly and youth: Reflections...
Authors: Silva Cirlene Francisca de Sales da , Dias Cristina Maria de Souza Brito , Vilela Daniely da Silva Dias
Published: March 2024

Abstract Objective The article aims to present reflections provoked through content analysis of interviews with families on the relationship between elderly people and young adults. Specifically, to make considerations on the characteristics and perceptions of both generations regarding the interactions between them. Method This is a qualitative, cross-sectional, and exploratory research. Twelve elderly people between 60 and 74 years old and 12 young adults between 19 and 40 years old participated, regardless of gender, social class, education, and profession. Data collection was carried out through a semi-structured interview script and a sociodemographic questionnaire. Data analysis was directed through thematic Content Analysis. Results The results showed that this is an intergenerational relationship permeated by nuances characteristic of the research subjects' age groups. Conclusion In this sense, there is a generation gap caused by the lack of quality time invested in these relationships.
Current follow-up results of Cyanotic Congenital Heart Diseases detected during Pregnancy in a specific Region
Authors: Duman Derya , Karpuz Derya
Published: March 2024

Background/Aims: Congenital heart disease (CHD) is the main cause of death in infants among congenital anomalies. Fetal echocardiography is important for the diagnosis and treatment plan of congenital heart diseases in the prenatal period. This study aimed to retrospectively screen the follow-up and treatment results of cyanotic CHD patients detected on fetal echocardiography.
Methods: Fetal echocardiography results were scanned from the hospital record system. Data of fetuses with major cardiac anomalies and cyanotic CHD were examined retrospectively.
Results: Fetal echocardiography was performed on 420 pregnant women between July 2020 and April 2023. Major cardiac anomalies and cyanotic heart disease were detected in the fetuses of 40 pregnant women (9.5%) out of 420. The median age of the pregnant women was 29 (19-41 years). The median gestational age at check-up was 23 weeks (22-28 weeks). 9/40 pregnant women (22.5%) had risk factors.
The most common cyanotic congenital heart diseases were hypoplastic left heart syndrome (HLHS) and unbalanced complete atrioventricular septal defects (AVSDs) with obstructive lesions of the right or left ventricle. Three fetuses (7.5%) with heart failure findings died intrauterine. Two fetuses with HLHS and critical aortic stenosis (AS) died before being operated on. A patient with complete AVSD, hypoplasia of the left heart chambers, AS, and severe aortic coarctation died due to sepsis during the post-operative follow-up period. Chromosome analysis was performed in 8 patients. Down syndrome was detected in 3 of the patients with complete AVSD. 22q11 deletion and DiGeorge Syndrome were detected in 2 patients with tetralogy of Fallot.
Conclusions: Congenital heart diseases and rhythm problems can be safely detected with fetal echocardiography. It is beneficial to perform a fetal echo scan at the appropriate gestational week, especially in fetuses with risk factors and in whom the four chambers view cannot be seen.
Permian Mengkarang coal facies and environment, based on organic petrology study
Authors: Suwarna Nana
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol1no1.20061aThe Permian Mengkarang Coal Measures is situated in the middle part of Sumatera Island. Some fresh outcrop samples of the Permian Mengkarang coals have been analyzed both macroscopically and microscopically, to asses their depositional environment. On the basis of organic-petrological analysis, the coal seams show variation in the predominance of some macerals, indicating successions of environmental changes. The dominant maceral group is vitrinite, present in very low to very high values; whilst the minor one is inertinite showing low amount. Environmental information derived from the organic facies study shows that the coals were deposited in wet zone of mire, ranges from wet limnic-telmatic zone to telmatic wet forest swamp under rapid burial condition, due to rapid basin subsidence. The organic facies concept is thus applicable in basin studies context and has potential to become an additional tool for interpretation of depositional environment.
Limestone Microfacies of Baturaja Formation along Air Rambangnia Traverse, South OKU, South Sumatra
Authors: Maryanto Sigit
Published: March 2024

DOI: 10.17014/ijog.v1i1.173Limestones of the Baturaja Formation occur at Air Rambangnia traverse, South Ogan Komering Ulu, South Sumatra, and they are used as objects for microfacies studies. The microfacies studies are based on a detailed petro­graphic analysis of thirty four limestone samples, taken from the traverse. Four types of the limestones are identified such as wackestone, packstone, grainstone, and floatstone. At least five microfacies form the limestone succesion of the Baturaja Formation. They are interpreted as sedimentary facies of very restricted bay and pond, back reef local slope, slope and shelf edge, winnowed platform edge sand, and reef flank facies.
Tinjauan terhadap tailing mengandung unsur pencemar Arsen (As), Merkuri (Hg), Timbal (Pb), dan Kadmium (Cd) dari sisa pengolahan bijih logam
Authors: Herman Danny Zulkifli
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol1no1.20064aWhen tailing of a mining activity is discharged into either landscape or river body, the pollutan element wastes are possible to disperse within those areas and may cause pollution on environment. The environment pollution hazards of arsenic (As), mercury (Hg), lead (Pb) and cadmium (Cd) probably occurred if tailing with the content of those elements is not handled properly. Particularly in the tropical regions, higher rates of chemical weathering and bio-chemical activity will contribute a rapid mobilization of the most potentially toxic elements.One of adverse health effects from arsenic to human life is in the case of arsenic-contained drinking waters exceed the threshold limit value. As a result, it will create chronic symptoms of toxicity within the human body such as gastro-intestinal irritation, nerve damage and tissue wastage. Tailing originated from amalgamation processing of gold ore enables its mercury waste to disperse in the vicinity of mining area and may form environment pollution by either organic or inorganic mercury. The pollution would be more hazardous to human health if mercury element in the water body transform biochemically into a compound of methylmercury. There is a variety of mechanisms by micro-organism which can bring about the formation of the very toxic methylmercury species, particularly with regard to its uptake by fish. Effects to the human health from the organic mercury include the blood-brain barrier and upsetting the metabolism of the nervous system. Whilst the main toxic effect of inorganic mercury is disruption the functions of kidneys and liver within human body. Most mining activity of base metal may discharge tailing with a significant lead (Pb) content. Lead is a cumulative poison, hence absorbing this element by human body with particularly exceeding its threshold limit value will bind strongly to a large number of molecules such as amino acids, haemoglobin, many enzymes, RNA and DNA. Then it will bring into disruption of many metabolic pathways, blood hypertension, hyperactivity and brain damage. Problems of cadmium could arise from a lead-zinc mining and smelting operation, from where pollution due to cadmium-contained tailing with additional aerial pollution associates with cadmium-contained fumes and particles. The toxic effects of cadmium to human health are suffering from lumbago-type pains, bone damage with multiple fractures of the softened bones and kidney failure.
Potensi batuan sumber (source rock) hidrokarbon di Pegunungan Tigapuluh, Sumatera Tengah
Authors: Heryanto Rachmat , Hermiyanto Heri
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol1no1.20065aThe Tigapuluh Mountain located in southeast corner of the Riau Province, is a part of the southern margin of the Central Sumatera Basin, one of the biggest hydrocarbon producing basin in Indonesia. The hydrocarbon source rock potential is a fine grained clastics within the Late Eocene Kelesa and Oligocene Lakat Formations. The Kelesa Formation source rock has a TOC value of 2.31–9.63%, with hydrocarbon content of a good to excellent categories (6.23–70.72 kg/ton rock), whereas the Lakat Formation has a TOC value of 0.67–3.46%, with hydrocarbon content of a poor to excellent categories (1.21–37.38 kg/ton rock). Source rock thermal maturation of the Kelesa Formation ranges from a late immature to early mature, with kerogen type of I and II, whereas the Lakat Formation ranges from a late immature, with kerogen type of I, II, and III. Diagenetic stage of the hydrocarbon source rock of the Kelesa Formation is included to Mudrock Stage II which is equivalent to a mesogenetic mature “A”. This diagenetic proccess was due to the burial history with the depth of up to 3000 m, resulted in a paleotemperature of 95C. The Lakat Formation is, however, included to Mudrock Stage I equivalent to the mesogenetic immature level. Burial history which occurred at the paleo temperature up to 65C, with the depth of burial up to 1500 m, led to the diagenetic process.
Hydrocarbon Source Rock Potential of the Sinamar Formation, Muara Bungo, Jambi
Authors: Zajuli Moh. Heri Hermiyanto , Panggabean Hermes
Published: March 2024

DOI: 10.17014/ijog.v1i1.175The Oligocene Sinamar Formation consists of shale, claystone, mudstone, sandstone, conglomeratic sandstone, and intercalation of coal seams. The objective of study was to identify the hydrocarbon source rock potential of the Sinamar Formation based on geochemichal characteristics. The analyses were focused on fine sediments of the Sinamar Formation comprising shale, claystone, and mudstone. Primary data collected from the Sinamar Formation well and outcrops were analyzed according to TOC, pyrolisis analysis, and gas chromatography - mass spectometry of normal alkanes that include isoprenoids and sterane. The TOC value indicates a very well category. Based on TOC versus Pyrolysis Yields (PY) diagram, the shales of Sinamar Formation are included into oil prone source rock potential with good to excellent categories. Fine sediments of the Sinamar Formation tend to produce oil and gas originated from kerogen types I and III. The shales tend to generate oil than claystone and mudstone and therefore they are included into a potential source rock.
Stratigrafi gunung api daerah Bandung Selatan, Jawa Barat
Authors: Bronto Sutikno , Koswara Achnan , Lumbanbatu Kaspar
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol1no2.20064The aim of this volcano stratigraphic study is to understand the historic relationship of each volcanoes in the South Bandung area. Methods used in this study are landsat analyses, fi eldwork, petrographic studies, and radiometric dating. Physiographically, South Bandung is composed of mountaineous area, hilly area, and high plain of Pangalengan and Bandung itself. Based on volcanic stratigraphy, volcanic rocks there are divided into eleven rock units, nine of them are identifi ed their volcanic sources, having Pliocene to Quaternary ages. The presence of subsurface Miocene volcanic rocks supports the super imposed volcanisms from Tertiary to Quaternary in this area. Mineral resources of sulphide metals are found in the central facies of Soreang, Kuda, and Dogdog volcanoes. Whereas, geologic hazards covering tectonic earthquakes, volcanic eruptions, and landslides also threaten this area. Mineral explorations and hazard mitigations are necessary to the presence of mineral resources and geologic hazard potential.
Sebaran akuifer dan pola aliran air tanah di Kecamatan Batuceper dan Kecamatan Benda Kota Tangerang, Propinsi Banten
Authors: Hadian Mohamad Sapari , Mardiana Undang , Abdurahman Oman , Iman Munib Ikhwatun
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol1no3.20061Geologically the Batuceper and Benda Sub-Regencies belongs to the western part of the Jakarta Basin. The area is covered by coastal alluvial and delta deposits, and volcanic product. Understanding the distribution and groundwater pattern, either in the shallow part or the deep part, are of the basic thing for a geometric model and its groundwater fl ow in identifying the groundwater conservation. The result of the aquifer distribution, either in the shallow or the depth parts, was approached by the geoelectrical and hydrogeological surveys in the fi eld and well data that has resulted in aquifer distribution, either in the shallow or the deep parts. In general, the shallow aquifer developed downward becomes semi confi ned and confi ned aquifers. Groundwater fl ow pattern indicated local cones depression of groundwater level, especially around the city. Depression of groundwater level is considered to be related to the natural shape of aquifer as lences. However, it was possible to be caused by over pumping in this zone.
Karakteristik kimiawi air danau kawah Gunung Api Kelud, Jawa Timur pasca letusan tahun 1990
Authors: Kadarsetia Eka , Primulyana Sofyan , Sitinjak Pretina , Saing Ugan Boyson
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol1no4.20062Kelud is a strato type volcano characterized by phreatomagmatic and magmatic eruptions. Since last eruption in 1990, the volcano has showed no-more signifi cant volcanism. Currently, there is an opened westward crater lake as a remained eruption crater containing meteoric water and volcanic gases condensate generated from subsurface.Analysis result of lake water exhibits that its chemical composition was fl uctuated due to an infl uence of factors such as seasons, rates of volcanism activity and reactivity of internal chemical elements within the lake water.The volume of lake water increases during the wet season and experiences dilution to make declination of chemical components within the water. Temperature of the lake water increases as well as volcanic intensity, simultaneously to make addition of dissolved chemical compounds and elements such as SO , Cl, B, and F and creates acidic water. Fumarole/solfatara released anykind of gases, such as H O, CO , CO, HCl, SO , H S, HF, H , HBr, NH , CH , H BO , and N . Moreover interaction of andesitic rock and acidic water apparently produces ionic source of Na, K, Ca. Mg, Fe, Al including trace elements such as Zn, Li, Sr, As, Rb, Cr, Pb, Ti, Ni, Cu, Ce, and Be.The composition of crater lake water of the Kelud volcano is included into an immature water category with HCO . The fl uctuation of element, compound and gas contents within the lake water with their depletion trend during the period of 1990 – 2005 may be related to decreasing of volcanism activity in the duration of 1990 post-eruption.
Menelusuri kebenaran letusan Gunung Merapi 1006
Authors: Andreastuti Supriati Dwi , Newhall Chris , Dwiyanto Joko
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol1no4.20064Until now, the large eruption of Merapi in 1006 is believed to take place although the truth is still debatable. Previous investigation proposed that the ”pralaya” of the Ancient Mataram Kingdom in 928 Saka (1006) was due to a volcanic activity. Bemmelen also inferred that impact of the eruption had destroyed and covered the Mendut and Borobudur Temples and dammed the Progo River. However, if the “pralaya” was caused by Merapi eruption, why the deposit that correlates to the the eruption is not recognized. If so, the eruption that covered the temples should have been very large, and left deposits around Merapi and of course easy to find. Historically, the “pralaya“ mentioned in the Pucangan Inscription did not happen in 1006, but in 1016 or 1017. However the “pralaya“ was caused by the attack of King Wurawari, not by the Merapi eruption. According to the history of Merapi eruptions, 11 large eruptions have occurred since 3000 years ago. However, none of those fi t with 1006 eruption. Except the large eruption (VEI 3-4), that produced Selo tephra, dated 1112 ± 73 years BP (765-911).
Korosifitas air terhadap fondasi beton, kasus di daerah Tapin, Kalimantan
Authors: Matahelumual Bethy Carolina
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol2no2.20071Corrosion means damaged metal or rust and it could cause explosion in industrial boiler, broken pipe, or stucked gun. Survey result shows that corrosion does not only occur on metals but it may form on building’s concrete. Some factors enable to form corrosion are temperature, dissolved salt, and microor- ganism activity.Corrosivity is influenced by the existence of low pH (concentration of Hidrogen ion), agressive CO , ammonium (NH +), magnesium (Mg+2), and sulphate (SO -2), and pH is the main factor for being concerned of corrosivity. The corrosion may begin to form at water pH of 4.5; the lower pH of water, the faster it forms.On July 2002, the area of KUD Makmur, Tambarangan village was chosen for corrosion study of concrete. Six water samples were analyzed for identification of some chemical elements which influenced the concrete corrosion. Analysis result exhibited that the water had acid characteristics with pH of 3.8-5.1, and the main compounds were CO , NH +, Mg+2, and SO -2; showing that the water ranged of high to very high corrosion character.A special water treatment needs to do in increasing the quality of water, so that the water could be used for foundation concrete, or to prevent corrosion by coating the inner surface of pipe by carbonate. Some parameters in building of foundation should consider such as firstly on planning, followed by environment data collection, and then building process, choosing equipments and maintenance.
Determinasi sumber tekanan dan analisis regangan utama di Gunung Api Papandayan untuk mengetahui korelasi dengan kegempaan
Authors: Suganda Ony Kurnia , Sarsito Dina Anggreni , Abidin Hasanuddin Zaenal , Kusnandar Aris
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol2no2.20072Papandayan volcano is located in the southern part of Garut regency, about 70 km southeast of Bandung, West Java. Monitoring the activities of Papandayan volcano has been done using various methods both continously and periodically, one of them is deformation method using repeated GPS (Global Positioning System) survey. GPS survey method is basically used to obtain the pattern and speed of the deformation body of the volcano, both in horizontal and vertical directions and also could be used to determined the location and size of the strain source of deformation based on Mogi model. By describing the shallow seismic activities before and after the eruption, this could show us the correlation of deformation characteristic and its seismic activities. By the result of eight GPS campaigns show that the deformation acceleration is running rapidly, where the fluctuation of shallow seismic activities are directly followed by inflation and deflation of volcano body. Pressure source movement running up and down to southwest-northeast direction. This correlation will lead us to the more comprehensive phenomena of a volcanic eruption, especially in Papandayan volcano.
Evaluasi awal kerentanan pelulukan/likuefaksi daerah Kendal dan sekitarnya, Jawa Tengah
Authors: Lumbanbatu Ungkap M. , Hidayat Suyatman
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol2no3.20074The investigated area is a region prone to liquefaction hazards since it consists of loose, saturated Quaternary deposits. The Quaternary deposits were deposited in several sediment environments such as swamp, estuary, near shore, off shore, and fluvial (flood plain, flood basin and paleo channel). Among those Quaternary deposits, the paleo channel and estuary deposits which mainly consist of fine - to medium - sand have high susceptibility to liquefaction. An earthquake-source zone which is able to trigger earthquake and to cause liquefaction hazards is known to be thrust fault and subduction zones. Earthquakes produced by thrust fault activities are classified as shallow earthquakes while earthquakes produced by a subduction zone are deep earthquakes. The investigated area is divided into low liquefaction susceptibility, moderate susceptibility and high liquefaction susceptibility zones. This division has been made based on physical characteristic of the sand deposits, grain size, thickness of sand and its position to groundwater level as well as the physical character of overburden layer.
Genesis endapan aluvium Dataran Purworejo Jawa Tengah; Implikasinya terhadap sumber daya geologi
Authors: Bronto Sutikno
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol2no4.20072Purworejo is part of the Southern Central Jawa alluvial plain that is bordered by the South Sera- yu Mountains and Sumbing Volcano in the north, West Progo Mountains in the east, Indian Ocean in the south, and Kebumen-Banyumas plain in the west. This Purworejo plain comprises reworked allu- vial deposits, particularly from Tertiary volcanic rocks of the South Serayu and West Progo Mount- ains, and the Sumbing Quaternary Volcano. In the northern part older reworked material has formed Purworejo alluvial fan in the east and Kutoarjo alluvial fan in the west. Those alluvial fans developed from northeast side of studied area. The central part of Purworejo plain consists of older coastal alluvial deposits which have been covered by recent fluvial deposits that transported by Wawar River in the west, Jali River in the middle, and Bogowonto River in the east. The southern part of Purworejo plain, starting from the Lereng River until present coastal line is composed of younger alluvial coast- al deposits. It is suggested that groundwater resources are abundant under the Purworejo plain, and the young alluvial coastal deposits contain highly potential iron sand and associated minerals.
Characteristics of volcanic gas correlated to the eruption activity; Case study in the Merapi Volcano, periods of 1990-1994
Authors: Priatna Priatna , Kadarsetia Eka
Published: March 2024

http://dx.doi.org/10.17014/ijog.vol2no4.20074Volcanic gases, collected from Gendol and Woro solfatara fields, the summit of Merapi Volcano during 1990-1994, show an increase in chemical composition of H , CO, CO , SO , and HCl prior to the volcanic events, on the contrary to the drastic decreasing water vapour. The carbon/sulfur ratio of the volcanic gases lies between 1.5 and 5.7 which means that they were derived from the fresh magma. The Apparent Equilibrium Temperature (AET) which is calculated from chemical compositions of volcanic gases using reaction of SO +3H = H S+2H O showed an increasing value prior to the volcanic events. The Merapi activities lasted during August 1990 to November 1994 showed a significant increase in ratio SO /H S prior to the November 1994 pyroclastic flow. The isotopic composition of volcanic gas condensates indicates that water vapour in Gendol is directly derived from the fresh magma. On the other hand, the contamination and cooling by the subsurface water occurred around the Woro field at a shallow part.