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Travertine is a non-marine carbonate rock precipitated from calcium- and bicarbonate-rich waters, commonly associated with hot springs, streams, and lakes in tectonically active regions. This study presents a systematic literature review of travertine deposit characteristics, encompassing mineralogical composition, geochemical signatures, petrographic textures, morphological types, isotopic properties, biotic–abiotic controls on formation, early diagenesis, and petrophysical implications. The synthesis indicates that travertine is predominantly composed of calcite, with aragonite forming under conditions of elevated temperature, high Mg/Ca ratios, and rapid CO₂ degassing. Travertines display exceptional textural diversity, ranging from abiotic crystalline crusts to microbially mediated fabrics such as shrub, peloidal, and stromatolitic structures. Major morphologies include fissure ridges, mounds, terraces, cascades, and slopes, strongly governed by tectonic setting, topography, hydrology, and substrate geology. Stable isotopes (δ¹³C and δ¹⁸O), strontium isotopes, trace elements, and REE patterns effectively constrain fluid provenance and distinguish thermogene from meteogene travertines. Microbial activity plays a crucial role in biomineralization, influencing precipitation rates, crystal morphology, and lamination patterns. Early diagenetic processes occurring during active deposition may significantly modify primary fabrics and geochemical signals. Travertine petrophysical properties exhibit distinctive porosity–velocity relationships, making them valuable analogues for subsurface carbonate reservoirs. This review highlights that travertines record complex interactions among physical, chemical, biological, and geological processes and hold significant value for paleoenvironmental reconstruction and carbonate reservoir studies.

Consumption of ethylene glycol–containing drugs can cause liver damage. This study aimed to evaluate the hepatoprotective potential of Moringa leaf extract (Moringa oleifera L.) on AST and ALT levels, liver morphology, hepatosomatic index, and liver histology in ethylene glycol–induced white rats (Rattus norvegicus L.). A Completely Randomized Design (CRD) was used with 20 male rats divided into five groups: normal control, ethylene glycol control, and three treatment groups (150, 300, and 450 mg/kg BW). Ethylene glycol was administered for 30 days, while the extract was given for 20 days. Blood samples were collected on day 31. Data were analyzed using One Way ANOVA and Duncan’s test. The results showed significant hepatoprotective effects (P = 0.000). AST and ALT levels in the treatment groups differed significantly from the normal control. Liver morphological changes were observed in both control and treatment groups. The hepatosomatic index, number of normal hepatocytes, and central vein diameter also showed significant differences. In conclusion, Moringa leaf extract demonstrates hepatoprotective potential by reducing AST and ALT levels, improving liver morphology, increasing normal hepatocytes, and decreasing central vein diameter, with the optimal dose at 450 mg/kg BW

This study investigates the use of derivational morphemes in David Goggins' motivational speech, “12 Minutes to Change Your Life,” featured on Huberman's podcast. Derivational morphemes, which create new words and alter grammatical categories, are essential in understanding language development and communication. Despite extensive research on derivational morphemes in various texts, there is limited analysis of their usage in motivational speeches. This study addresses this gap by analyzing Goggins' speech, focusing on identifying and classifying derivational morphemes. Using qualitative methods, the speech was transcribed, and words containing derivational morphemes were analyzed based on the theories of Fromkin, Rodman, and Hyams (2011). The findings reveal 23 instances of derivational morphemes, divided into class-changing and class-maintaining categories. Notable transformations include adjectives to adverbs, verbs to nouns, and adjectives to nouns, with the most frequent being adjectives to adverbs. The study provides insights into the function and impact of derivational morphemes in spoken motivational content, contributing to the broader understanding of morphology in language use.

Inflectional morphemes are of great importance in linguistic analysis, especially when applied to speech delivered in various contexts. We explore the complexity of inflectional morphemes through an analysis of Linda McMahon’s Speech script titled “Our Department’s Final Mission.” Inflectional morphemes are also known as grammatical morphemes, as their primary function is to provide grammatical information about a word without altering its core meaning or lexical category. These inflectional morphemes include possessive morphemes (-‘s/s’), plural morphemes (-s/es), third-person singular present morphemes (-s), past morphemes(-d/ed), present/progressive particles (-ing), past participle (-en), comparative particles (-er), and superlative particles (-est). Therefore, this study focuses on understanding the types of inflectional morphemes used in Linda McMahon’s speech script. The main theory of inflectional morphemes is based on an understanding of grammatical function, affixation processes, and categories in the language system. The researcher identified 7 categories of inflectional morphemes. The result showed that 99 inflectional morphemes were found in Linda McMahon’s speech script. There were 46 plural morphemes (-s), 26 present/progressive particle morphemes (-ing), 19 past tense morphemes (-ed), 4 possessive morphemes (-‘s/s’), 2 third-person singular present morphemes (-s),1 comparative morpheme (-er), and 1 superlative morpheme (-est). It can be conclude that the most dominant category in the analysis is the plural morpheme (-s) and the least dominant is the comparative (-er) and superlative (-est) morpheme. Its is hoped that this study can provide solutions in determining the types of inflectional morphemes in a speech script.

Landslides in the Giritengah Catchment Area are influenced by several factors, including geological conditions, rainfall intensity, geomorphology, soil characteristics, and inappropriate land use practices, all of which affect regional spatial planning and environmental stability. This study presents a literature review that analyzes landslide vulnerability, evaluates the impact of land use changes, and proposes integrated Soil and Water Conservation Techniques (SWCT) to support sustainable land management. The analysis applies Geographic Information System methods using thematic map overlays such as rainfall distribution, slope gradient, geological structure, and land use patterns. The results show that areas categorized as having high landslide vulnerability cover 44.02% or approximately 158.69 hectares of the catchment area, while areas with very low vulnerability account for only 0.12% or about 0.79 hectares. Land use conversion, particularly mixed dryland agriculture, has increased landslide risk by reducing slope stability and increasing surface runoff. To address this issue, conservation strategies are recommended, including vegetative measures such as greening 38.51 hectares in settlement areas and implementing agroforestry systems across 218.48 hectares. In addition, structural measures such as three dam retainers and twenty gully plugs are proposed in both protected and cultivation zones to support disaster mitigation and align with regional spatial planning policies.

The growing pressure on urban drainage systems caused by blockages and environmental pollution highlights the importance of developing sustainable filtration materials. This study explores the use of coffee waste as an environmentally friendly filler integrated into polyester fabric (PE 24S) to create a green filtration medium for drainage applications. The research focuses on developing and characterizing the composite material through macro-photographic morphology analysis, tensile strength testing, and antibacterial evaluation. The findings demonstrate that polyester fabric modified with coffee waste shows a tensile strength of 54.024 ± 5.498 MPa, elongation of 111.128 ± 6.915%, and a Young’s modulus of 0.486 ± 0.543 MPa, indicating improved flexibility and sufficient mechanical durability for drainage system use. Additionally, antibacterial testing reveals that the composite material can inhibit microbial growth due to the presence of natural bioactive compounds found in coffee waste. Overall, the results suggest that coffee waste–enhanced polyester fabric offers a sustainable and mechanically reliable alternative for environmentally friendly drainage infrastructure while supporting circular economy practices.

Students of vocational high schools are required to write an internship report as a form of accountability for completing their industrial training. However, various language errors are still found in students’ PKL reports. This study aims to describe and analyze morphological errors in the PKL reports of vocational high school students majoring in Electronics Engineering. The study employed a descriptive qualitative approach using document analysis. A total of 223 PKL reports were written by all students of SMK Negeri 3 Yogyakarta in 2025. The research data consisted of 25 PKL reports from students of the Electronics Engineering major selected through purposive sampling. Data analysis was carried out through the stages of identification, classification, description, quantification, and interpretation of morphological errors, with data validity ensured through theoretical triangulation. The results show that 286 morphological errors were identified, consisting of prefix errors (96), suffix errors (52), confix errors (41), reduplication errors (28), compound word errors (34), and base-form errors (35). Prefix errors were the most dominant type, accounting for 33.6% of all errors. These findings indicate that students still experience difficulties in applying affixation rules and forming standard words in formal written language. Such errors are influenced by interference from spoken language and the technical language used in the workplace. This study highlights the importance of structured and contextual morphology instruction to improve the quality of vocational students’ PKL report writing.

This study aims to analyze the effect of Tungsten Inert Gas (TIG) welding parameter variations on the mechanical and metallurgical properties of AISI 304 austenitic stainless steel, which is widely used in construction and industrial applications due to its excellent corrosion resistance and joint strength. The research focuses on identifying the optimal welding current to minimize welding defects and enhance joint structural integrity. Welding current was varied at three levels, namely 100 A, 125 A, and 135 A, while other parameters such as welding speed, argon shielding gas flow rate, and electrode type were kept constant. Mechanical properties were evaluated through Micro-Vickers hardness testing conducted in the weld metal, Heat Affected Zone (HAZ), and base metal, as well as tensile testing to determine ultimate tensile strength and elongation. In addition, non-destructive testing using the dye penetrant method was performed to detect surface welding discontinuities. Metallographic analysis was carried out using optical microscopy following an etching process to observe grain morphology, grain size, and the formation of microstructural phases. The results are expected to demonstrate a correlation between increased heat input due to higher welding current and changes in mechanical properties and microstructure, particularly in the HAZ. This study provides practical guidance for determining optimal TIG welding parameters for AISI 304 to achieve high tensile strength, homogeneous hardness distribution, and a stable microstructure resistant to intergranular corrosion.

Abbreviation is a common linguistic strategy used to achieve efficiency and clarity in modern communication. This study examines the abbreviation systems of English and Indonesian through a contrastive linguistic approach, focusing on morphological patterns, phonological constraints, and usage conventions. Employing a qualitative descriptive design, the data were collected from established linguistic references and analyzed using classical contrastive analysis principles. The findings reveal that English abbreviation formation is structurally flexible, allowing both pronounceable acronyms and non-pronounceable initialisms, often maintaining complex consonant clusters and orthographic capitalization. In contrast, Indonesian abbreviation formation is strongly influenced by phonological preferences, particularly ease of pronunciation and conformity to open syllable structures, resulting in forms that closely resemble ordinary lexical items. These structural differences suggest potential sources of negative transfer for language learners and challenges in translation practices. The study concludes that abbreviation systems are shaped not only by linguistic rules but also by sociocultural and communicative needs. Understanding these contrasts is essential for language teaching, translation, and further comparative linguistic research.

This study is entitled Nahwu and Shorof as Sciences in the Ontological Perspective within the Realm of Philosophy. The purpose of this research is to examine the essence of nahwu and shorof not merely as technical tools for understanding the Arabic language, but also as scientific entities that possess ontological dimensions in philosophy. Nahwu is understood as the science that regulates the arrangement of words within sentences, while shorof functions to form and transform words according to specific patterns. From an ontological perspective, both are not simply linguistic instruments, but rather representations of the structure and form of linguistic reality that reflect the orderliness of human thought. The analysis demonstrates that nahwu and shorof play a fundamental role in preserving the integrity of meaning in Arabic texts, while also serving as a means to comprehend the essence of language as a living and dynamic entity. Thus, nahwu and shorof can be regarded not only as practical sciences in language learning, but also as philosophical disciplines within the ontology of knowledge, revealing the essence of form and structure of language in relation to human and societal reality.

The development of lanthanum-doped barium hexaferrite materials has attracted considerable attention in the field of functional materials, particularly as electromagnetic wave absorbers. This literature review aims to analyze advances in synthesis methods, structural characteristics, magnetic properties, and electromagnetic absorption performance of lanthanum-doped barium hexaferrite reported in various studies. Synthesis techniques such as sol–gel, coprecipitation, solid-state reaction, and hydrothermal methods are compared to evaluate their effects on crystallite size, morphology, and phase purity. Lanthanum doping is known to modify lattice parameters, reduce coercivity, and enhance complex permittivity and permeability, which play crucial roles in absorption mechanisms. Furthermore, variations in dopant concentration significantly influence reflection loss values and effective absorption bandwidth. The reviewed literature indicates that optimization of composition and synthesis routes can produce materials with high absorption capability, good stability, and strong potential for application in electromagnetic interference mitigation devices. This review is expected to serve as a conceptual reference for future development of lanthanum-doped barium hexaferrite–based electromagnetic wave absorbing materials. The comparative approach also highlights research challenges, industrial application opportunities, and future research directions relevant to the evolving demands of modern communication and defense technologies at both national and global levels.

Diabetic nephropathy is a chronic complication resulting from hyperglycemia, which triggers oxidative stress and inflammation, leading to progressive structural and functional kidney damage. Orange peel and Aloe vera contain bioactive compounds with antioxidant and antifibrotic properties that may protect the kidneys from diabetes induced injury. Nanoemulsion delivery systems can enhance the bioavailability of these extracts in the body. This experimental study aimed to analyze the nephroprotective effects of orange peel and Aloe vera nanoemulsion in a diabetic nephropathy rat model, including glomerular morphology and kidney function. A post-test only control group design was used on Wistar rats divided into five groups: positive control, negative control, and three treatment groups receiving varying nanoemulsion doses. Glomerular structure was evaluated by assessing the number of glomeruli exhibiting synechiae and analyzed using the Kruskal–Wallis test due to non-normal data distribution, yielding p=0.2387 (p>0.05), indicating no significant differences among groups. Urea levels were elevated above normal, whereas creatinine levels remained within normal limits. Although not statistically significant, the treatment groups demonstrated nephroprotective tendencies, shown by improvements in glomerular synechiae in the diabetic nephropathy model.

The 2006 Yogyakarta earthquake, with a magnitude of 6.3 Mw, caused severe structural damage and significant casualties, highlighting the high seismic vulnerability in the Special Region of Yogyakarta (DIY). Tectonic activity in this region is strongly influenced by the subduction of the Indo-Australian Plate beneath the Eurasian Plate and the presence of active faults, particularly the Opak Fault. Local geological conditions dominated by young volcanic deposits and unconsolidated alluvial sediments further enhance seismic wave amplification. This study aims to estimate the Peak Ground Acceleration (PGA) in Prambanan District using the empirical McGuire (1977) attenuation relationship based on parameters from the 2006 earthquake. Analysis was conducted on 113 observation points to map the spatial distribution of ground acceleration. The results indicate that PGA values range from 29.2 to 35.6 gal, with the highest values concentrated in the southern and southeastern parts of Prambanan, characterized by alluvial deposits of the Opak River. In contrast, lower PGA values occur in the northern area underlain by more consolidated young volcanic materials. These findings emphasize the significant influence of lithology and geomorphology on local site response to seismic shaking. The results provide an important basis for seismic hazard assessment and mitigation planning in Prambanan and surrounding areas.

Tomato (Solanum lycopersicum) extract is known to contain potent antioxidant compounds such as lycopene, vitamin C, and flavonoids that can protect reproductive cells from oxidative stress. This study aims to analyze the effectiveness of tomato extract in improving the quality of spermatozoa in white rats (Rattus norvegicus) exposed to cigarette smoke, which is a major source of free radicals. The research applied a literature review approach by identifying, selecting, and analyzing related studies published between 2013 and 2023 from the Google Scholar and Academia.edu databases. Ten eligible studies were included for synthesis. The results show that the administration of tomato extract at doses ranging from 20 to 60 mg/kgBW/day significantly increased sperm motility, morphology, and viability in rats exposed to cigarette smoke. The improvement was associated with the antioxidant effect of lycopene, which protects Leydig cells and maintains testosterone production. These findings suggest that tomato extract has significant potential as a natural antioxidant therapy to prevent oxidative damage and reproductive disorders caused by cigarette smoke exposure.

Sugar apple (Annona squamosa L.) is one of the local fruit commodities with high potential as a source of functional natural ingredients. This study aims to identify the morphological characteristics and profile the phytochemical content of local Sumenep sugar apple fruit as a basis for the development of its bioactivity. Morphological observations were carried out in the Sumenep area, including fruit shape, size, stem circumference, leaf characteristics, and flower parts. Phytochemical analysis was conducted using qualitative tests for tannins and saponins, while tests for flavonoids and alkaloids are planned for the next stage. Observation results showed that local Sumenep sugar apple fruits have morphological variations in the form of ovoid, round, and oblong shapes, influenced by genetic factors and environmental conditions.  Phytochemical tests showed the presence of tannins, indicated by a color change to dark green when using FeCl₃ reagent, as well as the presence of saponins, demonstrated by the formation of stable foam during the shaking test. These findings reinforce the potential of local Sumenep soursop fruit as a candidate source of functional natural compounds, particularly in relation to antioxidant, antimicrobial activities, and other pharmacological benefits. Further studies are needed to analyze other phytochemical contents and evaluate bioactive activities more comprehensively.  

The demand for lightweight materials with high mechanical strength has driven the development of aluminum alloys, particularly Al-Mg-Si, through deformation processes such as cold rolling. This study aims to analyze the effect of varying degrees of cold rolling deformation on the grain aspect ratio and macrohardness of homogenized Al-Mg-Si alloys. Deformation was applied at three thickness reduction levels—5%, 10%, and 20%—followed by microstructural characterization using optical microscopy and macrohardness testing in accordance with ASTM E-18 standards. The results show that increasing deformation levels lead to elongated grain morphology, with the grain aspect ratio rising from 1.16 to 2.07 and macrohardness increasing from 46.64 HRE to 62 HRE. The emergence of slip lines and grain flattening indicates the occurrence of intense plastic deformation, while work hardening results from dislocation accumulation that impedes further slip motion. These findings confirm a strong correlation between microstructural evolution and mechanical property enhancement in cold-deformed Al-Mg-Si alloys. This research contributes to the optimization of cold rolling parameters to produce engineering materials with a desirable balance of strength, formability, and fatigue resistance for applications in the mining and heavy manufacturing industries.

This study examines youth slang (Jugendsprache) in the film Into the Beat (2020) through semantic and morphological approaches. The background of the research is based on the phenomenon of youth language development, which is dynamic, creative, and rich in socio-cultural meaning, yet often difficult for foreign speakers to understand. Youth language is chosen as the object of study because it reflects identity, group solidarity, and the communicative creativity of young people, and frequently appears in media, particularly films. The theoretical framework refers to experts’ perspectives on the characteristics of youth language, including the use of Anglicisms, abbreviations, metaphorization, and the formation of neologisms. The research method applied is descriptive qualitative, with data sources taken from the dialogues and subtitles of the film Into the Beat. The analysis is carried out based on Helmut Henne’s theory of youth language characteristics. The results reveal that youth slang in the film functions not only as a means of communication but also as a medium of emotional expression, lifestyle, and identity construction among German adolescents. Vocabulary such as alter, bro, krass, cool, and scheiße demonstrates creativity in morphological processes, including abbreviation, prefixation, and borrowing from foreign languages. The study concludes that youth slang plays an essential role in shaping characters, inter-character relationships, and the authenticity of the storyline. Furthermore, youth language reflects the evolving cultural and social dynamics of adolescents. This research is expected to contribute to linguistic studies, particularly semantics, and to serve as a valuable resource in German language learning by expanding vocabulary and fostering an understanding of authentic communication patterns among German teenagers.

Al–Mg–Si aluminum alloys are widely utilized in engineering applications due to their low density, excellent corrosion resistance, and mechanical properties that can be modified through heat treatment. This study investigates the effect of homogenization on the microstructure and hardness of Al–Mg–Si alloys produced by the squeeze casting process. The experimental procedure involved alloy melting, squeeze casting at 76 MPa using preheated metal molds, followed by homogenization at 400 °C for 4 hours. Microstructural characterization was performed using optical microscopy to examine the dendritic morphology and measure the secondary dendrite arm spacing (SDAS). Mechanical properties were evaluated through Vickers microhardness and Rockwell macrohardness testing. The results show that homogenization increases the SDAS from 32.59 μm to 36.88 μm and decreases the volume fraction of interdendritic phases from 15.51% to 13.57%. Furthermore, microhardness decreased from 50.22 VHN to 38.58 VHN, while macrohardness decreased from 54.60 HRE to 46.64 HRE. These reductions are attributed to the partial dissolution of Mg₂Si precipitates into the aluminum matrix during homogenization. Overall, this research provides valuable insight into the optimization of initial heat treatment parameters for Al–Mg–Si alloys produced by squeeze casting. The findings highlight the role of homogenization in improving microstructural uniformity and preparing the alloy for subsequent deformation processes such as cold rolling and extrusion, particularly for structural components used in mining and heavy transportation industries.

Cake is a wheat flour-based food product that is popular because of its sweet taste, soft texture, and attractive appearance. This study aims to evaluate the effect of purple sweet potato (Ipomoea batatas) paste substitution on the sensory, chemical, and physical quality of chocolate cake decorated with character pudding. The study was conducted in May–August 2025 at the Makassar Health Laboratory Center and the Chemistry Laboratory of the Pangkep State Agricultural Polytechnic. The study design used a Completely Randomized Design (CRD) with five treatments of purple sweet potato paste concentration (0%, 10%, 20%, 30%, 40%) and two replications. The parameters analyzed included sensory tests (color, aroma, taste, texture, and overall), chemical tests (antioxidant activity, water content, protein, fat, ash, and carbohydrate), and physical tests (expandability and crumb morphology). Data were analyzed using ANOVA and Duncan's further test for parameters with significant differences. The results showed that the addition of purple sweet potato paste had a significant effect (p < 0.05) on sensory and chemical characteristics. Treatment A4 (40% purple sweet potato paste) obtained the highest score in the hedonic test with an average panelist preference level of 4 (like). The best chemical characteristics were also obtained in A4, namely antioxidant content of 25.6%, water content of 32.97%, protein 3.52%, fat 17.19%, ash 1.34%, and carbohydrate 45.05%. Physically, the rise power was not significantly different between treatments, but the crumb morphology showed pore irregularities at high concentrations.

Cassava (Manihot esculenta) is a staple food that is widely consumed by the Indonesian population, especially in rural areas. However, during post-harvest handling and storage, cassava is highly susceptible to contamination by microorganisms, particularly fungi. These fungi can cause damage to the food, reduce its nutritional quality, and even produce mycotoxins that are harmful to human health. The increased risk of contamination has become an important concern in efforts to improve the quality and safety of cassava food products. This study aimed to identify the morphology of fungal colonies and the characteristics of fungal cell walls isolated from cassava stored in open environmental conditions for several days. The methods used in this study included isolation using Potato Dextrose Agar (PDA) media, macroscopic observation of fungal colony morphology, including color, edge, elevation, and texture, as well as Gram staining to observe the fungal cell wall properties. The results of this study revealed a diversity of fungal colony morphology, with three dominant types suspected to belong to the genera Aspergillus, Penicillium, and Rhizopus. Gram staining showed that the three isolates were characterized as Gram-negative, indicated by the absorption of safranin as the secondary stain. This study provides an initial overview of the types of fungi that may develop on cassava during storage, and it offers a foundation for further studies on the toxicity and food microbiology applications related to cassava. Morphological identification and Gram staining play an essential role in the initial screening before molecular identification is performed.