bluuebunny/crossref_metadata_2025 huggingface dataset:
Tree snails \(\textit{Amphidromus}\) Albers, 1850 (Pulmonata: Camaenidae) collected in Vietnam
Authors: Do Van Nhuong , Dinh Dieu Thuy , Do Duc Sang , Nguyen Thanh Tung , Le Hung Anh , Bogan Arthur E. , Do Van Tu
Published: March 2024

The paper presents results on tree snails based on samples collected from various parts of Vietnam during the period of 2008–2022. As a result, 14 Amphidromus species were recorded, which increased the diversity of the genus in Vietnam to a total of 27 species. Four species were new country records including Amphidromus atricallosus perakensis, Amphidromus leucoxanthus, Amphidromus perversus natunensis, and Amphidromus areolabiatus. Almost all 14 species were found in the south, while only Amphidromus roseolabiatus was recorded in the north. The great variation in the shell morphology of these tree snails required an integrative taxonomic approach to better understand the species diversity of the genus Amphidromus in Vietnam.
Genetic diversity of mitochondrial DNA D-loop sequence in Bang Troi chicken breed
Authors: Nguyen Thuy Thi Dieu , Dinh Thi Ngoc Thuy , Mai Thi Thanh Nga
Published: March 2024

Bang Troi chicken (GBT) is a local chicken that is free-gardening raised in Quang Ninh province. A 1,268 bp of mitochondrial DNA (mtDNA) D-loop of 17 Bang Troi chicken individuals was sequenced and analyzed. Comparative multiple sequence alignment revealed 17 base substitutions within 17 Bang Troi chicken individuals. Bang Troi chicken had a relatively high level of genetic diversity, expressed in the number of 13 haplotypes, haplotype diversity of 0.949. The Tajima’s test indicated that the analysed population in balancing selection with a D-value of 2.39. A phylogenetic tree based on 455 bp of hypervariable mtD-loop sequence classified 17 Bang Troi chicken individuals into three clades A, B, and E, which are common groups of Vietnamese and Asia indigenous chickens. This result provides the first genetic information and maternal lineages of Bang Troi chickens and it can support for registration of local chicken breeds.
Associations of \(\textit{OTUBAIN-1, STAT, SHP}\) and \(\textit{NF-KB2}\) expression with clinical features in Non-Hodgkin’s lymphoma patients
Authors: Nguyen Xuan Thi , Do Thi Trang , Nguyen Trong Ha
Published: March 2024

Non-Hodgkin's lymphoma (NHL) is a group of lymphoproliferative disorders characterized by the abnormal proliferation and accumulation of lymphocytes in the lymphatic system. An ovarian tumor domain containing ubiquitin aldehyde binding protein 1 (Otubain-1) is a deubiquitinating enzyme that cleaves ubiquitin or ubiquitin-like molecules and is expressed in various human tissues. The pathogenesis of NHL is associated with activations of the nuclear transcription factor (NF-κB) and signal transducer and activator of transcription proteins (JAK/STAT) signaling pathways. In this study, all the expressions of Otubain-1, NF-κB2, SHPs and STATs genes, the concentrations of cytokines IL-1β, IL-6 and TNF-α and clinical features in NHL patients were examined. To the end, gene expression levels of 82 NHL patients and 56 healthy individuals were determined by quantitative real time RT-PCR and secretion of cytokines by ELISA. As a result, concentrations of IL-6 and TNF-α in the patient group were found higher than in the healthy individuals and patients with higher LDH concentrations in the clinical cutoff, 280 U/L showed increased concentrations of AST, ALT and GGT than those with normal LDH concentrations. Interestingly, NHL patients with high Otubain-1 expression had significant elevations of GGT and ferritin concentrations as well as STAT-5 expression compared to those with low Otubain-1 expression. In conclusion, the present study indicates that up-regulation of Otubain-1 led to activation of STAT5 in lymphoma cells and liver dysfunction and metabolic syndrome in NHL patients.
Phylogenetic relationships of Quercus species (Fagaceae) in Vietnam based on multiplexed inter simple sequence repeat genotyping by sequencing
Authors: Hoang Thi Binh , Tetsukazu Yahara , Yoshihisa Suyama , Shuichiro Tagane , Nguyen Van Ngoc
Published: March 2024

Quercus is the largest genus of the family Fagaceae in the world and the second-largest in Vietnam, with approximately 50 species. However, the phylogeny study of the Quercus genus in Vietnam has yet to be thoroughly explored. In this study, we utilize the genome-wide single-nucleotide polymorphisms (SNPs) data obtained through Multiplexed Inter Simple Sequence Repeat Genotyping by sequencing (MIG-seq) to explore the phylogenetic relationships among Quercus species in Vietnam. The results of this study reveal that all Quercus species in Vietnam belong to subgenus Cerris and the phylogenetic analysis strongly supports the recognition of two infrageneric sections: Quercus and Ilex section for the Vietnamese Quercus. These results also confirm that the monophyly of Quercus in Vietnam is strongly supported by both morphological and molecular data. The results of this study also align entirely with previous research, indicating that Quercus species in Asia fall under the subgenus Cerris, comprising two sections: section Ilex and section Cyclobalanopsis.
\(\textit{Persicaria runcinata}\), a new generic record for Vietnam, and a key to Vietnamese polygonaceae
Authors: Tran Thi Phuong Anh
Published: March 2024

Persicaria runcinata is reported from Lai Chau provinces in Northern Vietnam, representing the first record of this species and the genus Persicaria in the country. Detailed photographic illustrations of studied specimens are provided. A key to the Vietnamese genera and species of Polygonaceae is presented.
A comprehensive study of the thermal behavior of rare earth chloride hydrates: resolving contradictions
Authors:   Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, Zakiryanova Irina D. , Korzun Iraida V. ,   Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, Vovkotrub Emma G. ,   Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, Antonov Boris D. ,   Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences
Published: March 2024

Rare earth metal chlorides are used as starting materials on electrochemical synthesis of pure metals. These chlorides are hygroscopic and tend to form hydrates. To resolve the uncertainty of the thermal behavior of the hydrates LaCl3 ∙ 7H2O, NdCl3 ∙ 6H2O, SmCl3 ∙ 6H2O, and YbCl3 ∙ 6H2O, a comprehensive study is carried out. Thermogravimetry, differential scanning calorimetry and mass spectrometry were used to reveal the dehydration and hydrolysis processes over the temperature range of 25–700 ºC. Phase compositions of the initial hydrates, intermediate and final products are investigated by the XRD analysis, Raman and IR spectroscopy. Distinctions in the thermal behavior of the studied hydrates were found. The features must be taken into account when obtaining anhydrous rare earth chlorides and in technological processes with its participation.
Soviet Repatriation in Postwar Politics and Private Life: Pro et Contra
Authors: Antoshin Alexey , Zapariy Julia
Published: March 2024

This article studies the Soviet repatriation policy after the Second World War referring to Soviet repatriation mission officers’ correspondence with the United Nations Relief and Reconstruction Administration (UNRRA), as well as Russian DPs’ ego-documents. The authors of the article raise the question about the fact that Soviet repatriation policy sparked an information war in the media in the second half of the 1940s, which has never been done by researchers previously. A variety of sources are used in the work, including the Hoover Institution for War, Revolution and Peace (Stanford, USA), the Bakhmetev Archives of Russian and Eastern European Culture at Columbia University (New York, USA), the State Archives of the Russian Federation (GARF, Moscow), as well as the UN Archive. The authors argue that discussions of Soviet repatriation policy should be placed within the context of the Cold War era, which began with the breakup of the Big Three alliance. The Soviet government used a variety of information, political, and intellectual resources to ensure the return of the maximum possible number of USSR citizens to their homeland. In this paper, the authors demonstrate that for the purposes of counterpropaganda, the anti-communist forces used the idea of repatriation by utilizing the potential of displaced people who had survived the Stalinist repression of the 1930s to oppose the existing political regime in the USSR. Considerable attention is paid to the position of UNRRA officials, primarily the heads of its mission in Austria. Several of them were highly critical of the activities of the Soviet repatriation authorities, believing that their behaviour often failed to help displaced people become interested in returning home.
Dinâmicas sociais no Facebook: Análise de comentários em conteúdos jornalísticos sobre a suposta tentativa de ataque terrorista à FCUL
Authors: Frutuoso Costa Bruno , Antunes Eduardo
Published: March 2024

Enquadrado nos média noticiosos como um crime de terrorismo sem paralelo e inédito em Portugal, um jovem português foi detido em 2022, na posse de catanas, bestas, punhais e botijas de gás e de um plano escrito com os detalhes do suposto atentado à Faculdade de Ciências da Universidade de Lisboa. Este artigo procura mapear as dinâmicas sociais que ocorreram no primeiro mês da circulação de conteúdos jornalísticos sobre este evento na plataforma social Facebook, uma das plataformas digitais mais utilizadas em Portugal no que diz respeito ao consumo e interação jornalística. Parte-se do pressuposto que os ambientes digitais desempenham um papel central e omnipresente nas dinâmicas sociais dos indivíduos, cuja utilização parte do diálogo com os contextos pessoais e individuais como sociais. Focando-se nos espaços participativos da imprensa de referência em Portugal no Facebook, este estudo exploratório é desenvolvido a partir do método de análise de conteúdo qualitativa aos comentários (N = 1969) direcionados aos textos jornalísticos (N = 28) do Diário de Notícias, Público, Observador e Jornal de Notícias, desde 10 de fevereiro a 11 de março de 2022. Os resultados mostram que as intervenções de utilizadores não se distribuem de forma homogénea e que uma manifestação pode ser utilizada com várias finalidades, sendo o ato de comentar aleatoriamente e os comportamentos de incivilidade as dinâmicas sociais mais frequentes. O ângulo jornalístico em torno do crime da prática de terrorismo surge como o tema central nos discursos dos utilizadores. Ainda assim, o reduzido foco no caráter terrorista do ato ou do plano, face a outros casos estudados internacionalmente, sugere que o caso português não fez uso de uma construção identitária estereotipada da personagem central que reforçasse a suspeita popular e/ou jurídica da natureza do ato.
Categorização de podcasts no Brasil: uma proposta baseada em eixos estruturais
Authors: Viana Luana , Vaz Chagas Luan José
Published: March 2024

O Brasil é um dos maiores consumidores de podcasts do mundo segundo diversas pesquisas de consumo de mídia incluindo o Digital News Report do Instituto Reuters. Esse crescimento do consumo nos últimos anos demanda estudos sobre as especificidades do fenômeno do podcasting para entender as caracterizações e especificidades que tangem essa mídia. O objetivo desse trabalho é analisar as características e estruturas de linguagem mais utilizadas pelos 50 podcasts mais ouvidos em plataformas como Spotify, Google Podcasts e Apple Podcasts. Para tanto, realizamos uma observação sistemática com base em propostas de classificações anteriores, de estudos radiofônicos e de podcasts, para buscar predominâncias que nos permitam discutir sobre o que vem se tornando próprio da gramática do podcast brasileiro. Os resultados apresentam uma proposta preliminar de categorização de oito eixos estruturais mais utilizados que podem ser replicados em outros mercados de consumo de podcast no mundo: I) Relato; II) Debate; III) Narrativas da realidade; IV) Entrevista; V) Instrutivo; VI) Narrativas Ficcionais; VII) Noticiosos; VIII) Remediados.
Heavy rainfall events in the state of Acre, western Amazonia
Authors: Moreira José G. do V. , Almeida Maila P. de , Silva Sonaira S. da , Montefusco Carolina de L. A. , Duarte Sérgio N. , Mendonça Fernando C.
Published: March 2024

ABSTRACT Preventing the occurrence of extreme hydrological events exceeds the current abilities of humanity. However, using adequate tools to estimate the probability associated with different values of hydrological variables, such as heavy rainfall, can help mitigate social and environmental damage. This study aimed to verify the hypothesis that the records of maximum rainfall, at different intervals of duration, in the three main rainfall stations in the state of Acre fit the log-normal distribution of two parameters (LN2) and, therefore, to evaluate the events of heavy rainfalls, based on the association between the duration of the rain and the return period. The equations conformed to the classic model of the LN2 model using the method of maximum likelihood once the baseline assumption of stationarity was met using the Mann-Kendall test. Adherence to the model was verified using the Anderson-Darling test. The adjusted distributions allowed for estimating the rainfall intensity at different durations and return periods for the cities of Cruzeiro do Sul, Tarauacá, and Rio Branco and are relevant elements for planning actions aimed at strengthening the components of water safety in the state of Acre.
Photosynthetic pigments, growth, and production of cherry tomato under salt stress and hydrogen peroxide
Authors: Nóbrega Jackson S. , Guedes Maria A. , Lima Geovani S. de , Gheyi Hans R. , Soares Lauriane A. dos A. , Silva Luderlândio de A. , Silva Saulo S. da , Brito Larissa A.
Published: March 2024

ABSTRACT Excess of salts in water and/or soil stands out as one of the stresses that compromise the development of crops, including cherry tomato, requiring the use of strategies that reduce salt stress effects, such as foliar application of hydrogen peroxide. Thus, the objective of this study was to evaluate the effect of foliar application of H2O2 on the contents of photosynthetic pigments, growth, and production of cherry tomato under irrigation water salinity. The design used was randomized blocks, in a 5 × 5 factorial scheme, with five values of electrical conductivity of water - ECw (0.3, 1.0, 1.7, 2.4, and 3.1 dS m-1) and five concentrations of hydrogen peroxide - H2O2 (0, 15, 30, 45, and 60 μM). Application of hydrogen peroxide at concentration of 60 μM attenuated the deleterious effects of salt stress on the growth and number of leaves of cherry tomato up to ECw of 3.1 dS m-1. Hydrogen peroxide concentration of 45 μM increased root dry mass, synthesis of chlorophyll b and total chlorophyll under electrical conductivity of water of 0.3 dS m-1 and synthesis of chlorophyll a up to ECw of 0.8 dS m-1. Foliar application of 30 μM reduced the effects of salt stress on leaf, shoot and total dry mass accumulation up to ECw of 3.1 dS m-1. Electrical conductivity of water from 1.41 dS m-1 reduced the production of cherry tomato.
Evidência de validade baseada nos processos de resposta de um protocolo de análise espectrográfica da voz
Authors: Silva Allan Carlos França da , Diniz Emmanuel Gustavo Rodrigues , Paiva Maxsuel Avelino Alves de , Silva Itacely Marinho da , Silva Saulo Iordan do Nascimento , Lima Filho Luiz Medeiros Araujo , Lopes Leonardo Wanderley
Published: March 2024

RESUMO Objetivo desenvolver a etapa de validade baseada nos processos de resposta do Protocolo de Análise Espectrográfica da Voz (PAEV). Métodos foram recrutados dez fonoaudiólogos e dez alunos de graduação em Fonoaudiologia, que aplicaram o PAEV em dez espectrogramas, realizaram o julgamento dos itens do PAEV e participaram de uma entrevista cognitiva. A partir das respostas, o PAEV foi reanalisado para reformulação ou para exclusão de itens. Utilizou-se o teste Qui-Quadrado e os valores de acurácia para análise das respostas dos questionários, assim como análise qualitativa dos dados da entrevista cognitiva. Resultados os participantes obtiveram acurácia maior que 70% na maioria dos itens do PAE. Apenas sete itens alcançaram acurácia menor ou igual a 70%. Houve diferença entre as respostas de presença versus ausência de dificuldade na identificação dos itens no espectrograma. A maioria dos participantes não teve dificuldade na identificação dos itens do PAEV. Na entrevista cognitiva, apenas seis itens não obtiveram correta identificação da intenção, conforme verificado na análise qualitativa. Além disso, os participantes sugeriram exclusão de cinco itens. Conclusão após a etapa de validação baseada nos processos de resposta, o PAEV foi reformulado. Sete itens foram excluídos e dois itens foram reformulados. Dessa forma, a versão final do PAEV após essa etapa foi reduzida de 25 para 18 itens, distribuídos nos cinco domínios.
EFFECT OF FILLER CONTENT AND SIZE ON THE FLEXURAL STRENGTH AND HARDNESS OF PURE IRON POWDER FILLED LAMINATED FIBERGLASS EPOXY COMPOSITES
Authors: Gheid Youcef , Chemami A. , Aouaichia Hamza , Belkaid Khmissi
Published: March 2024

The aim of this work is to evaluate the effect of the amount of pure iron powder (99.9987%), introduced as a filler in a glass-epoxy composite laminate, as well as the variation of its grain dimensions, on its flexure strength and hardness. Contact molding was used to produce laminate plates of 15, 20, and 25% of weight content with three different dimensions 92, 64, and 32 μm, and the fiberglass content was set at 30%. For the bending test, the specimens were prepared according to ISO 14125 standard specification, the test was carried out with three different speeds, and the required number of specimens were manufactured according to Taguchi's orthogonal array L9 (3 × 3) by varying three parameters (iron powder content, grain size, and test speed). The results were studied with the Taguchi method; however, the hardness was measured on plates with the same iron powder content while varying the dimensions of its grains (92, 64, and 32 μm). The results show that the pure iron powder content and dimension variations have a direct and clear influence on the composite material's mechanical characteristics, in such a way that: a specific percentage of filler and grains size reduction could widely increase the hardness as well as the material flexure strength. The results of the elaborated composite material's bending test were compared to a 45% glass-epoxy laminate. Whereas the hardness of the elaborated laminate was compared to a resin plate and the 45% glass-epoxy laminate.
From risk study to field evidence: an unprecedented and isolated case of delayed ettringite formation in Brazil
Authors: Torres Igor Ferraz , Torres Sandro Marden , Andrade Tibério
Published: March 2024

This paper describes the first ever reported case in Brazil where delayed ettringite formation (DEF) has been confirmed as the sole cause of deterioration in field concrete. Still under construction and less than 2 years old, numerous cracks were observed in the foundation structures of a building located in Recife, a city known for its history of alkali–aggregate reaction (AAR) cases. In addition to a field survey of cracks, microstructural analyses, tests for residual expansion and compressive strength, a review of the structural design, determination of sulfate content in the groundwater and simplified thermal analysis were carried out. The results confirmed that DEF was the sole cause of the damage present in cast-in-place concrete structures, with no evidence of AAR or any other deterioration process. This work corroborates previously published studies on the high risk of the occurrence of DEF in the region, demonstrating the urgent need for a preventive technical standard in the country, considering the chemical composition of cements and prior thermal analyses to adopt possible preventive measures to limit the maximum internal temperature of concrete.
Gold Phytomining: A New Idea for Enviromental Sustainablity in Indonesia
Authors: Krisnayanti Baiq Dewi , Anderson Christopher
Published: March 2024

DOI: 10.17014/ijog.v1i1.171New technology is needed to protect the safety and health of communities and the environment at ASGM locations in Indonesia. This technology must be simple, cheap, easy to operate, and financially rewarding. A proven option that should be promoted is phytoextraction, a farming activity that could develop agriculture as an alternative livelihood in ASGM areas. This is a technology where plants are used to extract metals from waste rock, soil, or water. These metals can be recovered from the plant in its pure form, then be sold or recycled. Gold phytoextraction is a commercially available technology, while an international research has shown that phytoextraction will also work for mercury. In the context of this idea, tailings would be contained in ‘farming areas’ and cropped using phytoextraction technology. Gold and mercury would be extracted in the crops, with the remaining mercury burden of the tailings becoming adsorbed to soil constituents. The system would be financially rewarding to ‘gold farmers’. The economic value of this scenario could facilitate the clean-up and management of mercury pollution, reducing the movement of mercury from tailings into soil, water, and plants, thereby mitigating environmental and human risk in the mining areas. The goal of the described research is to promote agriculture as an alternative livelihood in ASGM areas. The gold value of the phytoremediation crop should provide a cash incentive to artisanal farmers who develop this new agricultural enterprise. The benefits will be social, environmental, and economic, as opportunities for education, employment, new business, the containment of toxic mercury, food safety and security, and revenue are all realized.
Some Key Features and Possible Origin of the Metamorphic Rock-Hosted Gold Mineralization in Buru Island, Indonesia
Authors: Idrus Arifudin , Prihatmoko Sukmandaru , Hartono Hill. Gendoet , Idrus Fadlin , Ernowo Ernowo , Franklin Franklin , Moetamar Moetamar , Setiawan Iwan
Published: March 2024

DOI: 10.17014/ijog.v1i1.172This paper discusses characteristics of some key features of the primary Buru gold deposit as a tool for a better understanding of the deposit genesis. Currently, about 105,000 artisanal and small-scale gold miners (ASGM) are operating in two main localities, i.e. Gogorea and Gunung Botak by digging pits/shafts following gold-bearing quartz vein orientation. The gold extraction uses mercury (amalgamation) and cyanide processing. The field study identifies two types/generations of quartz veins namely (1) Early quartz veins which are segmented, sigmoidal, dis­continous, and parallel to the foliation of host rock. The quartz vein is lack of sulfides, weak mineralized, crystalline, relatively clear, and maybe poor in gold, and (2) Quartz veins occurred within a ‘mineralized zone’ of about 100 m in width and ~1,000 m in length. The gold mineralization is strongly overprinted by an argillic alteration zone. The mineralization-alteration zone is probably parallel to the mica schist foliation and strongly controlled by N-S or NE-SW-trending structures. The gold-bearing quartz veins are characterized by banded texture particularly colloform following host rock foliation and sulphide banding, brecciated, and rare bladed-like texture. The alteration types consist of propylitic (chlorite, calcite, sericite), argillic, and carbonation represented by graphite banding and carbon flakes. The ore mineralization is characterized by pyrite, native gold, pyrrhotite, and arsenopyrite. Cinnabar, stibnite, chalcopyrite, galena, and sphalerite are rare or maybe absent. In general, sulphide minerals are rare (<3%). Fifteen rock samples were collected in Wamsaid area for geochemical assaying for Au, Ag, As, Sb, Hg, Cu, Pb, and Zn. Eleven of fifteen samples yielded more than 1.00 g/t Au, in which six of them are in excess of 3.00 g/t Au. It can be noted that all high-grade samples are originally or containing limonitic materials, that suggest the role of supergene enrichment. Interestingly, most of the high-grade samples contain also high grade As (up to 991ppm), Sb (up to 885 ppm), and Hg (up to 75 ppm). Fluid inclusions in both quartz vein types consist of four phases including L-rich, V-rich, L-V-rich, and L1-L2-V (CO2)-rich phases. Mineralizing hydrothermal fluid is typified by CO2-rich fluid, moderate temperature of 300 - 400 ºC and a typical low salinity (0.36 to 0.54 wt.% NaCl eq). Based on those key features, gold mineraliza­tion in Buru Island meets the characteristics of LS epithermal or orogenic gold deposit types; however, it tends to be fitter with orogenic gold deposit rather than another type.
Epithermal Gold-Silver Deposits in Western Java, Indonesia: Gold-Silver Selenide-Telluride Mineralization
Authors: Yuningsih Euis Tintin , Matsueda Hiroharu , Rosana Mega Fatimah
Published: March 2024

DOI: 10.17014/ijog.v1i2.180The gold-silver ores of western Java reflect a major metallogenic event during the Miocene-Pliocene and Pliocene ages. Mineralogically, the deposits can be divided into two types i.e. Se- and Te-type deposits with some different characteristic features. The objective of the present research is to summarize the mineralogical and geochemical characteristics of Se- and Te-type epithermal mineralization in western Java. Ore and alteration mineral assemblage, fluid inclusions, and radiogenic isotope studies were undertaken in some deposits in western Java combined with literature studies from previous authors. Ore mineralogy of some deposits from western Java such as Pongkor, Cibaliung, Cikidang, Cisungsang, Cirotan, Arinem, and Cineam shows slightly different characteristics as those are divided into Se- and Te-types deposits. The ore mineralogy of the westernmost of west Java region such as Pongkor, Cibaliung, Cikidang, Cisungsang, and Cirotan is characterized by the dominance of silver-arsenic-antimony sulfosalt with silver selenides and rarely tellurides over the argentite, while to the eastern part of West Java such as Arinem and Cineam deposits are dominated by silver-gold tellurides. The average formation temperatures measured from fluid inclusions of quartz associated with ore are in the range of 170 – 220°C with average salinity of less than 1 wt% NaClequiv for Se-type and 190 – 270°C with average salinity of ~2 wt% NaClequiv for Te-type.
Analogue Modeling of Oblique Convergent Strike-Slip Faulting and Application to The Seram Island, Eastern Indonesia
Authors: Sapiie Benyamin , Hadiana Meli
Published: March 2024

DOI:10.17014/ijog.v1i3.189Sandbox experiment is one of the types of analogue modeling in geological sciences in which the main purpose is simulating deformation style and structural evolution of the sedimentary basin.  Sandbox modeling is one of the effective ways in conducting physically modeling and evaluates complex deformation of sedimentary rocks. The main purpose of this paper is to evaluate structural geometry and deformation history of oblique convergent deformation using of integrated technique of analogue sandbox modeling applying to deformation of Seram Fold-Thrust-Belt (SFTB) in the Seram Island, Eastern Indonesia. Oblique convergent strike-slip deformation has notoriously generated area with structural complex geometry and pattern resulted from role of various local parameters that control stress distributions. Therefore, a special technique is needed for understanding and solving such problem in particular to relate 3D fault geometry and its evolution. The result of four case (Case 1 to 4) modeling setting indicated that two of modeling variables clearly affected in our sandbox modeling results; these are lithological variation (mainly stratigraphy of Seram Island) and pre-existing basement fault geometry (basement configuration). Lithological variation was mainly affected in the total number of faults development.  On the other hand, pre-existing basement fault geometry was highly influenced in the end results particularly fault style and pattern as demonstrated in Case 4 modeling.  In addition, this study concluded that deformation in the Seram Island is clearly best described using oblique convergent strike-slip (transpression) stress system.
Emergence of Lava Dome from the Crater Lake of Kelud Volcano, East Java
Authors: Hidayati Sri , Basuki Ahmad , Kristianto Kristianto , Mulyana Iyan
Published: March 2024

DOI: 10.17014/ijog.v4i4.83Kelud Volcano (+1731 m) in East Java is one of the most active and dangerous volcanoes in Indonesia. A large lake occupies the summit crater. Historical eruptions generally only lasted for a very short time, mostly no longer than a few hours. The outburst is usually accompanied by pyroclastic flows. On August 2007, the activity of the volcano was initiated by the increase of the temperature of lake water and the change of the colour from typical green to yellow. Activities of the volcano are discussed following the swarms of volcano-tectonic (VT) earthquakes on September 10th, September 26th to 29th, and October 24th to November 2nd. On September 26th to 29th, hypocentral distribution of those VT shifted from 5 km deep to just beneath the crater. The highest number of VT earthquakes occurred on November 1st attaining 50 events, then followed by a swarm of B-type events, where the number reached 1437 events in a day. The volcanic activity peaked on November 3rd when seismic records became saturated, which then was preceded by a sharp increase of lake temperature and a sudden deflation of radial tilt. It suggests that the lava extrusion forming a lava dome was taking place.
Geology and Characteristics of Pb-Zn-Cu-Ag Skarn Deposit at Ruwai, Lamandau Regency, Central Kalimantan
Authors: Idrus Arifudin , Setijadji L. D. , Thamba F.
Published: March 2024

DOI: 10.17014/ijog.v6i4.126This study is dealing with geology and characteristics of mineralogy, geochemistry, and physicochemical conditions of hydrothermal fluid responsible for the formation of skarn Pb-Zn-Cu-Ag deposit at Ruwai, Lamandau Regency, Central Kalimantan. The formation of Ruwai skarn is genetically associated with calcareous rocks consisting of limestone and siltstone (derived from marl?) controlled by NNE-SSW-trending strike slip faults. It is localized along N 70° E-trending thrust fault, which also acts as the contact zone between sedimentary and volcanic rocks in the area. The Ruwai skarn is mineralogically characterized by prograde alteration comprising garnet (andradite) and clino-pyroxene (wollastonite), and retrograde alteration composed of epidote, chlorite, calcite, and sericite. Ore mineralization is typified by sphalerite, galena, and chalcopyrite, formed at early retrograde stage. Galena is typically enriched in silver up to 0.45 wt % and bismuth of about 1 wt %. No Ag-sulphides are identified within the ore body. Geochemically, SiO is enriched and CaO is depleted in limestone, consistent with silicic alteration (quartz and calc-silicate) and decarbonatization of the wallrock. The measured resources of the deposit are 2,297,185 tonnes at average grades of 14.98 % Zn, 6.44% Pb, 2.49 % Cu, and 370.87 g/t Ag. Ruwai skarn orebody was originated at moderate temperatures of 250 - 266 °C and low salinity of 0.3 - 0.5 wt.% NaCl eq. The late retrograde stage was formed at low temperature of 190 - 220 °C and low salinity of ~0.35 wt.% NaCl eq., which was influenced by meteoric water incursion at the late stage of the Ruwai Pb-Zn-Cu-Ag skarn formation.
Regression-Correlation of Petrophysical Inter-Parameter of Igneous Rocks and Limestone from Kulonprogo Mountain Region, Yogyakarta Special Region
Authors: Maryanto Sigit , Hasan R.
Published: March 2024

DOI: 10.17014/ijog.v6i4.127Laboratory test of complete petrophysic parameters encompasing water absorption, compressive strength, Los Angeles abrasive strength, Rudellof abrasive strength, and wear resistance with Na2SO4 has been carried out for igneous and carbonate rocks taken from Kulonprogo Mountains region. Statistical verification of the data exhibits variation of correlation coefficients among parameters ranging from medium to very high value. The values of petrophysic test results are determined by the rock types. The result of this study is useful to estimate the accuracy of values of each parameter test result in Geological Survey Institute Laboratory using regression formula representing each relationship.
Remote Sensing Analysis of Recent Carbonate Platforms, East of Sabah: Potential Analogues for Miocene Carbonate Platforms of the South China Sea
Authors: Chalabi Aicha , Pierson B. , Talib Jasmi Ab
Published: March 2024

DOI: 10.17014/ijog.v7i3.141Recent carbonate platforms may provide useful analogues for fossil platforms and reefs, and could allow the generation of quantitative tools for the prediction of facies distribution, reservoir volumes, and reservoir quality. Data from these modern analogues would greatly enhance our ability to construct more reliable and calibrated reservoir models for carbonate fossil fields, such as the Miocene carbonate platforms of Central Luconia Province, Sarawak. In this study, carbonate facies maps and quantitative reservoir data will be generated by using remote sensing techniques. Satellite imageries over the carbonate platforms east of Sabah have been acquired and processed for generating facies maps. In order to produce a reliable facies map, the composition and grain size distribution of the sediments that make up individual facies must be known in order to determine the classes that have been identified on the initial facies maps. Samples collected from the Gaya and Selekan platforms were analyzed and the results of grain size analysis are illustrated.
Ore Characteristics and Fluid Inclusion of the Base Metal Vein Deposit in Moncong Bincanai Area, Gowa, South Sulawesi, Indonesia
Authors: Asmariyadi Asmariyadi , Langkoke R. , Maulana A. , Nur I. , AstamAn W.
Published: March 2024

DOI: 10.17014/ijog.v7i4.146This paper is dealing with ore characteristics and fluid inclusion of the Moncong Bincanai, Biringbulu Subregency of Gowa Regency, South Sulawesi Province, Indonesia. The mineralization is a vein type, with the orientation of N170oE /65oSW, hosted in open-space filling within basalt. The mineralization consists of galena, sphalerite, chalcopyrite, and pyrite. Vein thickness ranges from 5 - 17 cm, showing a crustiform banding texture, with a sequence from outer to centre: quartz, carbonate (siderite), sulphide. The quartz displays primary growth textures such as comb, crystalline, saccharoidal, and colloform. Analytical methods applied include AAS and fluid inclusion microthermometry. Chemical composition of the vein indicates an average of Pb = 47.92%, Cu = 1.27%, Zn = 1.02%, and Fe = 9.46%, which shows a significant concentration of Pb. Fluid inclusion microthermometry results indicate a range of formation temperature of 240 - 250C and salinity of the responsible hydrothermal fluid of 2.1 - 2.5 wt.% NaCl eq. The deposit is categorized into low-sulfidation epithermal deposits, which was formed within a range of 410 - 440 m below paleosurface.
Characteristic of Lokon Volcano Deformation of 2009 - 2011 Based on GPS Data
Authors: Kriswati Estu , Meilano I. , Suhartaman Suhartaman , Suparman Y. , Abidin H. Z. , Sinaga Tumpal
Published: March 2024

DOI: 10.17014/ijog.v7i4.147Precursor of Lokon Volcano eruptions in 2011 is believed to begin since December 2007 which was marked by increasing number of volcanic earthquakes and gas emission. To support this information, deformation method is used primarily to determine deformation characteristics of Lokon volcanic activity in the period of 2009-2011. The period of analysis is adapted to the presence of GPS data. Displacement rate of Lokon GPS observation points in the period of 2009 - 2011 ranged from 1.1 to 7 cm a year. Strain patterns that occur in the areas are compression surrounding Tompaluan crater and extension in the eastern slope. Location of the pressure source for August 2009 - March 2011 measurement was at a depth of 1800 m beneath Tompaluan crater. Deformation in the Lokon Volcano is characteristized by the compression zone in the summit and crater area caused by magma activity raised into the surface from a shallow magma source which is accompanied by a high release of volcanic gases. Accumulated pressure release and deformation rate as measured in the Lokon Volcano remain low.
Interstratified Illite/Montmorillonite in Kamojang Geothermal Field, Indonesia
Authors: Yudiantoro D. F. , Suparka E. , Yuwono S. , Takashima I. , Ishiyama D. , Kamah Y. , Hutabarat J.
Published: March 2024

DOI: 10.17014/ijog.v8i4.167Kamojang geothermal field located in West Java Province, falls under the Pangkalan Subregency, Bandung Regency. The researched area is a geothermal field located in the Quaternary volcanic caldera system of about 0.452 to 1.2 Ma. The volcanic activity generated hydrothermal fluids, interacting with rocks producing mineral alteration. The minerals formed in the areas of research are interstratified illite/montmorillonite (I/M). Analyses to identify interstratified I/M have been performed by X-ray diffraction using ethylene glycol, while the determination of the type and percentage of interstratified I/M was based on the calculation method of Watanabe. The methodology was applied on core and cutting samples from Wells KMJ-8, 9, 11, 13, 16, 23, 49, 51, and 54. The result of analysis of the samples shows that the type of clay is interstratified illite/montmorillonite and the minerals are formed at temperatures ranging from 180 to 220° C. The type of interstratified I/M in the studied area is S = 0 and S = 1. The percentage of illite type S = 0 is between 20 - 35% illite, whereas type S = 1 has about 45 - 72% illite. Along with the increasing depth, the percentage of illite is getting greater. This is consistent with the vertical distribution of temperature which increases according to the depth. This correlation results in an interpretation that the upflow zone of the geothermal reservoir is located in the centre of the Kamojang geothermal field.
Stratigraphy and Tectonics of the East Ketungau Basin, West Kalimantan during Palaeogene
Authors: Suyono Suyono
Published: March 2024

DOI: 10.17014/ijog.v8i4.170East Ketungau Basin is one of frontier basins in Indonesia. Some of these basins, especially those in eastern Indonesia, have been identified to possess potential of oil and gas. The existing publications of geological fieldworks and extensive exploration in the East Ketungau Basin are limited. The detailed sedimentological and biostratigraphical studies of the sedimentary succession will be used to reconstruct the tectonic and palaeogeographical history of the basin. The sedimentary Mandai Group consists of three facies such as mudstone facies, clean sand facies and alternation between thinly coal seam, coaly shale, and claystone facies. However, each facies characterizes depositional environment of barrier- island and associated strand-plain systems.
Assessment of Economic and Environmental Conditions for Effective Development of Silicate Nickel Ores from Deposits in the Middle Urals
Authors:   Institute of Economics of the Ural Branch of RAS, Semyachkov A. I. , Balashenko V. V. ,   Institute of Economics of the Ural Branch of RAS
Published: March 2024

Development of nickel deposits in the Ural will be economically beneficial for both Russia and the region. As an important strategic raw material, nickel is used in the nuclear, military, pharmaceutical, petrochemical industries, as well as in the production of portable electronic devices, electric vehicles, etc. Given the current global political situation, Russia has to develop the resource base focusing on domestic deposits, especially those located in industrially developed regions. In order to assess business performance, the paper analyses technical and economic indicators, such as expected income, investment attractiveness, prospects for accelerating development. As a result, the study presents an economic justification for the development of nickel deposits in the Middle Urals and an assessment of the technical and economic feasibility of mining relatively low-grade silicate nickel ores. The development of these deposits implies an increase in expenditures on subsoil management and environmental protection and an improvement of social conditions for the population (increased employment, regular environmental and medical-biological expertise, etc.). The article proposes measures for the rational integrated use of extracted raw materials in the considered deposits, particularly, production of building materials from mineral waste considering environmental and social factors. Economic calculations performed for the Kungur deposit (annual ore production capacity of 396 thousand tonnes), the Parushinsky deposit (273 thousand tonnes) and the Serov deposit (600 thousand tonnes) showed a high profitability of mining operations, including the processing of mineral waste.
Human Development Index of China and Economic Growth: Hindsight and Global Perspective
Authors:   Lomonosov Moscow State University, Shi Sh.
Published: March 2024

Currently, it becomes important to examine the role of human capital in the context of China’s economic development and its impact on the world economy. The paper reconstructs a realistic Human Development Index (HDI) and corresponding dimensional indices of the People’s Republic of China (PRC) and its provinces for 1990–2020. The obtained indices were compared with those of the major countries of the world or countries similar to Chinese provinces, revealing that China underestimates its HDI, according to the United Nations Development Programme data. To analyse the role of human capital in economic growth of the world, China, and a group of countries similar in population size and HDI to Chinese provinces, a constructed model combined human capital with education quality and physical capital. The findings show that the PRC overcame negative conditions affecting its ability to grow rapidly. It took China just 30 years to reach the same level of HDI that other countries achieved in 40 years. Additionally, inequalities in HDI of Chinese provinces were significantly reduced. By 2025, 90 % of the PRC’s population is expected to reach a very high level of human development, thus completing the transformation from a developing to a so-called developed country. Educational human capital explains almost three-quarters of economic growth variation in the long run, while the average duration of education will continue to influence economic growth in the next 10–30 years. Considering demographic, institutional, and technological effects, as well as the objectives of the 14th Five-Year Plan, an increase in the duration and quality of education in China is predicted. The paper demonstrates that PRC’s recent economic growth is due to an increase in both physical and human capital.
Central Asian Migrants in the Labour Market of Sverdlovsk Oblast: A Sociological Study
Authors:   Ural Federal University, Bedrina E. B. ,   Institute of Economics of the Ural Branch of RAS, Neklyudova N. N. ,   Institute of Economics of the Ural Branch of RAS, Kozlova O. A. ,   Institute of Economics of the Ural Branch of RAS
Published: March 2024

International migration significantly affects demographic and socio-economic development of regions. The study aims to assess the situation and characteristics of adaptation of Central Asian migrants in the regional labour market and identify general trends. The sociological study was conducted in March–May 2023 in Sverdlovsk oblast using a questionnaire survey and intelligence interviews. Selected questionnaires of migrants from countries seen as the main suppliers of labour power to the regional labour market — Kyrgyzstan, Tajikistan and Uzbekistan — were analysed. The obtained results confirmed some conclusions of previous relevant studies and revealed new trends. The labour market of Sverdlovsk oblast is characterised by a high proportion of immigrants from Tajikistan, a growing share of people employed in the industrial sector and the tendency of immigrants from Kyrgyzstan to organise their own business. The research described the factors that help migrants adapt to the regional labour market: specific legal regulation (in Kyrgyzstan), knowledge of the Russian language, family ties, education, formal employment, length of stay in Russia, naturalisation. To improve the migration policy, it is recommended to control and stimulate formal employment of foreign workers by establishing a unified database and constantly monitoring information about labour migrants and their family members. Results of this study may be useful for specialists in the field of labour migration. Considering the development of new migration policy tools, it is necessary to pay attention to this prospective area of research, particularly, to the issues of labour patents and organised recruitment.
Rutinas periodísticas y ciclo de los desastres. Hacia una comunicación para la reducción del riesgo
Authors: Palma Karla , Salinas Claudio
Published: March 2024

El presente artículo aborda la relación entre las rutinas periodísticas y el ciclo de desastres, centrándose en los mega-incendios forestales ocurridos en Chile en 2017, con el objetivo de responder a la pregunta: ¿cómo algunas dimensiones de las rutinas periodísticas condicionan la construcción pública de los desastres socioambientales, incidiendo en la comprensión de los riesgos? Este estudio se enmarca en la literatura sobre la construcción social del riesgo y el proceso de construcción de las rutinas de prensa, proporcionando una perspectiva sobre el papel de la comunicación en la gestión del riesgo de desastres socioambientales. La investigación adopta un enfoque mixto y su corpus de análisis consiste en 852 noticias, de medios nacionales y locales, que abarcan todo el ciclo de cobertura de los mega-incendios.Los resultados revelan la importancia de la comunicación del riesgo para prevenir emergencias, pues el acceso a información veraz amplía la comprensión de la situación y permite una mejor gestión de este. Sin embargo, se observa que las rutinas periodísticas influyen en el conocimiento público de los desastres y limitan su comprensión sistémica. Esto incluye la temporalidad de los desastres, que a menudo se inscriben más en la coyuntura de estos y menos en su ciclo, perdiéndose así la comprensión de su contexto de producción, que es más amplio y complejo.
Bienestar y felicidad laboral como estrategia de sostenibilidad empresarial. Un análisis de las organizaciones españolas certificadas con el sello B-Corp
Authors: Castro-Martínez Andrea , Pérez-Ordóñez Cristina , Moreno-Albarracín Belén
Published: March 2024

La responsabilidad social ha ganado peso y se valora no sólo en términos de mejora de la imagen de marca sino vinculada a la sostenibilidad y la competitividad. Así han surgido distintos estándares que acreditan la gestión de la sostenibilidad como modelo de negocio de las empresas. Este buen comportamiento empresarial abarca diversos ámbitos, entre los que se incluye el trato que ofrecen a sus plantillas. Esta investigación se centra en las empresas españolas de más de 50 empleados que disponen de sello B Corp. El objetivo general es analizar estas entidades teniendo en cuenta a sus plantillas desde la perspectiva del bienestar y la felicidad organizacional para conocer los indicadores que emplean las empresas con propósito y su nivel de cumplimiento. Los resultados explicitan el modo en que la certificación B Corps considera el propósito a nivel interno, por lo que la presente investigación pone de relevancia la relación entre las entidades acreditadas y la alineación con los ODS, la RSC, el bienestar y la felicidad laboral.