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Journal articles on the topic 'SCI102000'

Author: Grafiati

Published: 27 July 2024

Last updated: 31 July 2025

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1

Kovačević, Andjelka B. "On Mautner-Type Probability of Capture of Intergalactic Meteor Particles by Habitable Exoplanets." Sci 1, no. 2 (2019): 40. http://dx.doi.org/10.3390/sci1020040.

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Both macro and microprojectiles (e.g., interplanetary, interstellar and even intergalactic material) are seen as an important vehicle for the exchange of (bio)material within our solar system as well as between stellar systems in our Galaxy. Accordingly, this requires estimates of the impact probabilities for different source populations of projectiles, specifically for intergalactic meteor particles which have received relatively little attention since considered as rare events (discrete occurrences that are statistically improbable due to their very infrequent appearance). We employ the simp

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2

Hansma, Helen Greenwood. "Mechanical Energy before Chemical Energy at the Origins of Life?" Sci 1, no. 2 (2019): 50. http://dx.doi.org/10.3390/sci1020050.

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Forces and mechanical energy are prevalent in living cells. This may be because forces and mechanical energy preceded chemical energy at life’s origins. Mechanical energy is more readily available in non-living systems than the various other forms of energy used by living systems. Two possible prebiotic environments that might have provided mechanical energy are hot pools that experience wet/dry cycles and mica sheets as they move, open and shut, as heat pumps or in response to water movements.

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3

Ugrinova, Iva, Mounira Chalabi-Dchar, Karine Monier, and Philippe Bouvet. "Nucleolin Interacts and Co-Localizes with Components of Pre-Catalytic Spliceosome Complexes." Sci 1, no. 2 (2019): 33. http://dx.doi.org/10.3390/sci1020033.

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Nucleolin is an RNA binding protein that is involved in many post-transcriptional regulation steps of messenger RNAs in addition to its nucleolar role in ribosomal RNA transcription and assembly in pre-ribosomes. Acetylated nucleolin was found to be associated with nuclear speckles and to co-localize with the splicing factor SC35. Previous nuclear pull down of nucleolin identified several splicing components and factors involved in RNA polymerase II transcription associated with nucleolin. In this report, we show that these splicing components are specifics of the pre-catalytic A and B spliceo

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4

Emokpae, Mathias Abiodun, and Emmanuel Babatunde Fatimehin. "Copper-to-Zinc Ratio Correlates with an Inflammatory Marker in Patients with Sickle Cell Disease (Version 1)." Sci 1, no. 2 (2019): 34. http://dx.doi.org/10.3390/sci1020034.

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Sickle cell disease (SCD) is an inherited disorder of major health challenge in Nigeria. Micronutrients deficiencies often associated with the disorder may cause inflammation and abnormal metabolisms in the body. The copper-to-zinc ratio is a more important assessment than the concentrations of either of the metals in clinical practice. This study seeks to evaluate serum levels of c-reactive protein (CRP), copper, zinc and copper-to-zinc ratio and to correlate copper-to-zinc ratio with CRP in adult subjects with SCD. Serum copper, zinc, CRP and plasma fibrinogen were assayed in 100 confirmed S

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5

Kompanichenko, Vladimir. "Thermodynamic Jump from Prebiotic Microsystems to Primary Living Cells." Sci 1, no. 2 (2019): 35. http://dx.doi.org/10.3390/sci1020035.

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It is proposed that the primary living cells (“probionts”) cannot emerge of organic substance simply by continuous chemical complication of prebiotic macromolecules and microsystems. The complication must be accompanied by the radical thermodynamic transformation (“jump”) of prebiotic microsystems that resulted in the acquired ability to extract free energy from the environment and export entropy. This transformation is called “the thermodynamic inversion” The inversion may occur by means of the efficient (intensified) response of the microsystems on the oscillations of physic-chemical paramet

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6

Kaimaris, Dimitris, Petros Patias, Giorgos Mallinis, and Charalampos Georgiadis. "Data Fusion of Scanned Black and White Aerial Photographs with Multispectral Satellite Images." Sci 1, no. 2 (2019): 36. http://dx.doi.org/10.3390/sci1020036.

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To date, countless satellite image fusions have been made, mainly with panchromatic spatial resolution to a multispectral image ratio of 1/4, fewer fusions with lower ratios, and relatively recently fusions with much higher spatial resolution ratios have been published. Apart from this, there is a small number of publications studying the fusion of aerial photographs with satellite images, with the year of image acquisition varying and the dates of acquisition not mentioned. In addition, in these publications, either no quantitative controls are performed on the composite images produced, or t

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7

MohanKumar, Palanisamy, Veluru Jagadeesh Babu, Arjun Subramanian, et al. "Thermoelectric Materials—Strategies for Improving Device Performance and Its Medical Applications." Sci 1, no. 2 (2019): 37. http://dx.doi.org/10.3390/sci1020037.

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Thermoelectrics, in particular solid-state conversion of heat to electricity and vice versa, is expected to be a key energy harvesting and temperature management solution in coming years. There has been a resurgence in the search for new materials for advanced thermoelectric energy conversion applications and to enhance the properties of existing materials. In this paper, we review recent efforts on improving figure-of-merit (ZT) through alloying and nano structuring. As heatsink characteristics dictate the performance of thermoelectric modules, various types of heatsink designs has been inves

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8

Chand, Mohan Bahadur, Bikas Chandra Bhattarai, Prashant Baral, and Niraj Shankar Pradhananga. "Trend Analysis of Temperature Data for Narayani River Basin, Nepal." Sci 1, no. 2 (2019): 38. http://dx.doi.org/10.3390/sci1020038.

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Study of spatiotemporal dynamics of temperature is vital to assess changes in climate, especially in the Himalayan region where livelihoods of billions of people living downstream depends on water coming from the melting of snow and glacier ice. To this end, temperature trend analysis is carried out in Narayani river basin, a major river basin of Nepal characterized by three climatic regions: tropical, subtropical and alpine. Temperature data from six stations located within the basin were analyzed. The elevation of these stations ranges from 460 to 3800 m a.s.l. and the time period of availab

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9

Lakshmi-Narayana, Hussain, Mauger, and Julien. "Transport Properties of Nanostructured Li2TiO3 Anode Material Synthesized by Hydrothermal Method." Sci 1, no. 2 (2019): 39. http://dx.doi.org/10.3390/sci1020039.

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Li2TiO3 nanopowders were synthesized by hydrothermal process using anatase TiO2 and LiOH H2O as raw materials. Li2TiO3 crystallizes in the layered monoclinic structure (space group C2/c) with average crystallite size of 34 nm. Morphology, elemental composition and local structure of products were carried out using HRTEM, FESEM, EDS, Raman and FTIR spectroscopy. Transport properties investigated by d.c. (4-probe measurements) and a.c. (complex impedance spectroscopy) show the activation energy of 0.71 and 0.65 eV, respectively. The ionic transport properties of Li+ ions in nanocrystalline Li2Ti

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10

Hamdi, Najlaa, Souad Chaouch, Ivan da Silva, et al. "Synthesis, Structural Characterization, and Biological Activities of Organically Templated Cobalt Phosphite (C4N2H14)[Co(H2PO3)4]·2H2O." Sci 1, no. 2 (2019): 41. http://dx.doi.org/10.3390/sci1020041.

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A novel hybrid phosphite (C4N2H14)[Co(H2PO3)4]·2H2O was synthesized with 1,4- diaminobutane (dabn) as a structure-directing agent using slow evaporation method. Single crystal X-ray diffraction analysis showed that it crystallizes in the P\-1 triclinic space group, with the following unit cell parameters (Å, °) a = 5.4814 (3), b = 7.5515 (4), c = 10.8548 (6), α = 88.001 (4), β = 88.707 (5), γ = 85.126 (5), and V = 447.33 (4) Å3. The crystal structure was built up from corner-sharing [CoO6]-octahedrons, forming chains parallel to [001], which are interconnected by H2PO3− pseudo-tetrahedral unit

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11

Jheeta, Sohan. "Molecules to Microbes." Sci 1, no. 2 (2019): 42. http://dx.doi.org/10.3390/sci1020042.

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How did life begin on Earth? And is there life elsewhere in the Cosmos? Challenging questions, indeed. The series of conferences established by NoR CEL in 2013, addresses these very same questions. The basis for this paper is the summary report of oral presentations that were delivered by NoR CEL’s network members during the 2018 Athens conference and, as such, disseminates the latest research which they have put forward. More in depth material can be found by consulting the contributors referenced papers. Overall, the outcome of this conspectus on the conference demonstrates a case for the ex

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12

Moriarty, Patrick, and Damon Honnery. "New Energy Technologies: Microalgae, Photolysis and Airborne Wind Turbines." Sci 1, no. 2 (2019): 43. http://dx.doi.org/10.3390/sci1020043.

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Because of the near-term risk of extreme weather events and other adverse consequences from climate change, and, at least in the longer term, global fossil fuel depletion, there is world-wide interest in shifting to noncarbon energy sources, especially renewable energy (RE). Because of possible limitations on conventional renewable energy sources, researchers have looked for ways of overcoming these shortcomings by introducing radically new energy technologies. The largest RE source today is bioenergy, while solar energy and wind energy are regarded as having the largest technical potential. T

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13

Gabour Sad, Tamara, Indira Djafaridze, Aleko Kalandia, Maia Vanidze, Katarina Smilkov, and Claus Jacob. "Antioxidant Properties of Western Georgia Native Khechechuri Pear." Sci 1, no. 2 (2019): 44. http://dx.doi.org/10.3390/sci1020044.

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An endemic pear species spreads in one region of western Georgia, Adjara, called Khechechuri. Pears are dietary source of bioactive components such as polyphenols and triterpenic acid. In addition to its gastronomic value, the aim of the article was to examine and compare phenolic compounds, flavonoids, catechins, phenolic acids, and antioxidant activities in five species of Khechechuri collected from various regions in Adjara region: Adjaristskali, Merisi, Dandalo, Shuakhevi, and Khulo. Five fruit parts, the skin, edible pulp, the whole pear (skin + pulp), juice and the pomace were analyzed a

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14

Raj, Stanley, Sohan Jheeta, Daniel, Arun Krishna, Joseph Pious, and Hudson Oliver. "Influence of Gravitational Shielding on Time Dilation." Sci 1, no. 2 (2019): 45. http://dx.doi.org/10.3390/sci1020045.

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This research work investigates the possibility of shielding gravity. The ultimate purpose of this work is to understand the reality behind the concept of Gravitational Shielding (GS) and time dilation. Since the 19th century, scientists have tried to arrive at an understanding of GS via the use of various experiments. Unfortunately, some experiments failed to prove the existence of gravitational shielding, whereas some results proclaimed the possibility of attaining GS. The original phenomenon exhibited by nature cannot easily be understood, but some experiments have demonstrated that the ans

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15

de Farias, Savio Torres, Thais Gaudencio Rego, and Marco V. José. "Origin of the 16S Ribosomal Molecule from Ancestor tRNAs." Sci 1, no. 2 (2019): 46. http://dx.doi.org/10.3390/sci1020046.

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We tested the hypothesis that concatemers of ancestral tRNAs gave rise to the 16S ribosomal RNA. We built an ancestral sequence of proto-tRNAs that showed a significant identity of 51.69% and a percentage of structural identity of 0.941 with the 16S ribosomal molecule. We also propose a hypothesis for the emergence of translation.

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16

Kovacevic, Andjelka. "On Mautner-Type Probability of Capture of Intergalactic Meteor Particles by Habitable Exoplanets." Sci 1, no. 2 (2019): 47. http://dx.doi.org/10.3390/sci1020047.

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Both macro and microprojectiles (e.g., interplanetary, interstellar and even intergalactic material)are seen as important vehicles for the exchange of potential (bio)material within our solar system as wellas between stellar systems in our Galaxy. Accordingly, this requires estimates of the impact probabilitiesfor different source populations of projectiles, including for intergalactic meteor particles which havereceived relatively little attention since considered as rare events (discrete occurrences that are statisticallyimprobable due to their very infrequent appearance). We employ the simp

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17

Nanaki, Stavroula, Rodanthi Maria Eleftheriou, Panagiotis Barmpalexis, Margaritis Kostoglou, Evangelos Karavas, and Dimitrios Bikiaris. "Evaluation of Dissolution Enhancement of Aprepitant Drug in Ternary Pharmaceutical Solid Dispersions with Soluplus® and Poloxamer 188 Prepared by Melt Mixing." Sci 1, no. 2 (2019): 48. http://dx.doi.org/10.3390/sci1020048.

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In the present study Aprepitant (APT) ternary solid dispersions (SDs) were developed and evaluated for the first time. Specifically, ternary SDs of APT with Poloxamer 188 and Soluplus® (SOL) were prepared via melt mixing and compared to binary APT/Poloxamer 188 and APT/SOL SDs. Initially, combined thermo-gravimetric and hot-stage polarized light microscopy studies indicated that all tested compounds were thermally stable up to 280 °C, while Poloxamer 188 acted as a plasticizer to SOL by significantly reducing the temperature required to fully solubilize the API during SD preparation. Different

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18

Chand, Mohan Bahadur, Bikas Chandra Bhattarai, Niraj Shankar Pradhananga, and Prashant Baral. "Trend Analysis of Temperature Data for Narayani River Basin, Nepal." Sci 1, no. 2 (2019): 49. http://dx.doi.org/10.3390/sci1020049.

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Study of spatiotemporal dynamics of temperature is vital to assess changes in climate, especially in the Himalayan region where livelihoods of billions of people living downstream depends on water coming from the melting of snow and glacier ice. To this end, temperature trend analysis is carried out in Narayani river basin, a major river basin of Nepal characterized by three climatic regions: tropical, subtropical and alpine. Temperature data from six stations located within the basin were analyzed. The elevation of these stations ranges from 460 to 3800 m a.s.l. and the time period of availab

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19

Costa, Ana, Luís Dias, and Alexandra Dias. "Imbibition, Germination, and Early Seedling Growth Responses of Light Purple and Yellow Seeds of Red Clover to Distilled Water, Sodium Chloride, and Nutrient Solution." Sci 1, no. 2 (2019): 51. http://dx.doi.org/10.3390/sci1020051.

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The seeds of red clover are heteromorphic and two color morphs can be visually recognized, light purple and yellow, resulting from heterozygosity and recessive homozygosity at two loci. Here, we report the responses of seed imbibition, seed germination, and early seedling growth of the two morphs to distilled water, sodium chloride, and complete nutrient solution. The sensitivityof red clover seeds to treatments increased with the stage of development in what seems to be a cumulative process. No differences were found in seed imbibition between morphs or between treatments. In seedling growth,

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20

Coo, Byeong-Choo, and Young-Jin Lee. "Railway Vehicle Wheel Restoration by Submerged Arc Welding and Its Characterization." Sci 1, no. 2 (2019): 52. http://dx.doi.org/10.3390/sci1020052.

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When a railway vehicle moves on a curved rail, sliding contact occurs between the rail head side and wheel flange, which wears the wheel flange down. The thinned flange needs to be restored above the required minimum thickness for structural safety. In this study, a new process and welding wire for restoring worn-out railway wheels by submerged arc welding was developed. To characterize the properties of the restored wheel, dilatometric analysis of phase transformation, SEM/EDX analyses, hardness measurement, and residual stress measurement using the X-ray diffraction method were performed. Fi

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21

Burchell, Mark, and Kathryn Harriss. "Organic Molecules: Is It Possible to Distinguish Aromatics from Aliphatics Collected by Space Missions in High Speed Impacts?" Sci 1, no. 2 (2019): 53. http://dx.doi.org/10.3390/sci1020053.

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A prime site of astrobiological interest within the Solar System is the interior ocean of Enceladus. This ocean has already been shown to contain organic molecules and is thought to have the conditions necessary for more complex organic biomolecules to emerge and potentially even life itself. This sub-surface ocean has been accessed by Cassini, an unmanned spacecraft that interacted with the water plumes ejected naturally from Enceladus. The encounter speed with these plumes and their contents was 5 km s−1 and above. Encounters at such speeds allow analysis of vaporised material from submicron

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22

Bandyopadhyay, Grunska, Dcruz, and Greenwood. "Are Scientific Models of Life Testable? A Lesson from Simpson’s Paradox." Sci 1, no. 2 (2019): 54. http://dx.doi.org/10.3390/sci1020054.

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We address the need for a model by considering two competing theories regarding the origin of life: (i) the Metabolism First theory and (ii) the RNA World theory. We discuss two inter-related points. (I) Models are valuable tools in understanding both the processes and intricacies of the origin of life issues. (II) Insights from models also help us to evaluate the core objection to origin of life theories called “the inefficiency objection” commonly raised by proponents of both the Metabolism First theory and the RNA World theory against each other. We use Simpson’s paradox as a tool for chall

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23

Emokpae, Mathias Abiodun, and Emmanuel Bamidele Fatimehin. "Copper-to-Zinc Ratio Correlates with an Inflammatory Marker in Patients with Sickle Cell Disease." Sci 1, no. 2 (2019): 55. http://dx.doi.org/10.3390/sci1020055.

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Sickle cell disease (SCD) is an inherited disorder of major health challenge in Nigeria. Micronutrients deficiencies often associated with the disorder may cause inflammation and abnormal metabolisms in the body. The copper-to-zinc ratio is a more important assessment than the concentrations of either of the metals in clinical practice. This study seeks to evaluate serum levels of c-reactive protein (CRP), copper, zinc and copper-to-zinc ratio and to correlate copper-to-zinc ratio with CRP in adult subjects with SCD. Serum copper, zinc, CRP and plasma fibrinogen were assayed in 100 confirmed S

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