jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Sarah Abidemi Akintola | A. A. Aleem | Makanjuola Oki | Peter P. Ikubanni | Adeolu Adesoji Adediran | O. R. Esabunor
Source: Chemical Science International Journal (article, 2024-11-14)
Field: Materials Science — Materials Chemistry

Sterilized Chicken Feather as Eco-friendly Corrosion Inhibitor for Mild Steel in a Water- Based Drilling Mud – Gravimetric and FTIR Assessment This research evaluated the corrosion performance of mild steel in sterilized and unsterilized alkaline mud corroding systems using chicken feather powder (CFP) obtained through the usual hydrolysis and acid neutralization protocol. Insightfully, gravimetric analysis revealed that bacterial infestation of the unsterilized environment caused its corrosion performance to be lower at 10.3% while the sterilized counterpart stood at 49% at 92 days of exposure to the environments respectively. The functional groups, C=N, O=C=O, H-C=O etc, revealed by FTIR to be present in the protein saturated feather were overwhelmed by microbial activities rendering them inactive to perform as inhibitors. Gravimetric analysis ; Fourier transform infrared spectroscopy ; Corrosion ; Feather ; Drilling ; Environmentally friendly ; Pulp and paper industry ; Corrosion inhibitor ; Environmental science ; Metallurgy ; Seawater ; Waste management ; Nuclear chemistry ; Materials science ; Chemistry ; Chemical engineering ; Geology ; Engineering ; Organic chemistry ; Ecology ; Biology Corrosion Behavior and Inhibition ; Hydrogen embrittlement and corrosion behaviors in metals ; Concrete Corrosion and Durability
Authors: Oleg Latyshev | P. A. Latysheva | M. Luisetto
Source:  (article, 2024-12-11)
Field: Materials Science — Materials Chemistry

RADIATION SAFETY AT THE BARAKA NUCLEAR POWER PLANT IN THE EMIRATE OF ABU DHABI UAE Abu dhabi ; Nuclear power plant ; Business ; Nuclear power ; Geography ; Physics ; Archaeology ; Nuclear physics Graphite, nuclear technology, radiation studies ; Nuclear and radioactivity studies
Authors: T. Draganova | A. Tsoncheva
Source:  (article, 2024-12-11)
Field: Materials Science — Materials Chemistry

MOTIVATING PHYSICS STUDENTS AS A MANAGEMENT PROCESS IN LESSONS FOR PRACTICAL ACTIVITIES (FOR EXAMPLE ON NATURAL RADIOACTIVITY) I welcome all participants of the scientific forum "Radiation Safety in the Modem World"The security situation in the world is surprisingly not stable in the 21 st century and the humanity is exposed to unexpected challenges that affect each of us.Chemical and radioactive substances are wonderful helpers and a great result of human progress.Although they are supportive, on the other hand, they can be very dangerous, in the event of accidents or deliberate misuse.Therefore, it is very important to organize conferences of this type, where we, scientists, can participate in promoting world security and safety. Humanity ; Event (particle physics) ; Natural (archaeology) ; Process (computing) ; Natural radioactivity ; Engineering ethics ; Computer science ; Political science ; Business ; Engineering ; History ; Physics ; Law Graphite, nuclear technology, radiation studies
Authors: Abdulaga Gurbanov | A. Y. Comardov
Source: Scientific Petroleum (article, 2024-12-01)
Field: Chemistry — Analytical Chemistry

Development of a new reagent for the prevention of asphaltene-resin-paraffin deposits The accidents arising in the collection and transportation system, as a result of complications during transportation and storage of gas and gas condensate, caused by their physicochemical and rheological properties, lead to both loss of production and damage to the ecological state of the environment. As we know, the difficulties and obstacles that arise during the collection, preparation for transportation, and storage of hydrocarbons are related to their multicomponent and multiphase nature, as well as their structural structure, the elimination of which has been investigated. The complexity and complications arising from the collection, transportation and storage of hydrocarbons in many cases due to their complexity and multiphase, as well as their structural structure. Collection and transportation of multiphase well products at offshore fields requires the selection of a reasonable pipeline diameter. The collection distance of gas condensate mixtures cannot be increased indefinitely by increasing the pipeline diameter and has a maximum limit. Increasing the collection distance beyond this limit leads to filling the gas pipeline with liquid (condensate) and deterioration of the efficient operation of the gas pipeline. To determine the hydraulic resistance coefficient, known formulas were used for a single-phase hydraulic medium using the velocity and density of the mixture, as well as its viscosity. At the same time, the use of two dependences for laminar and turbulent flows for the calculation of the hydraulic resistance coefficient was considered sufficient. At the same time, empirical formulas are used to determine the diameter and length of pipelines.. Keywords: transportation; pipeline; gas-condensate; systems; diameter; hydraulic; liquid; separation; hydrodynamic; separation. Reagent ; Asphaltene ; Chemistry ; Organic chemistry Petroleum Processing and Analysis ; Coal and Coke Industries Research ; Enhanced Oil Recovery Techniques
Authors: Nikolay Dolchinkov
Source:  (article, 2024-12-11)
Field: Materials Science — Materials Chemistry

ANALYSIS OF THE ACTIVITY OF THE NATIONAL AUTOMATED SYSTEM FOR CONTINUOUS CONTROL OF THE RADIATION GAMMA BACKGROUND I welcome all participants of the scientific forum "Radiation Safety in the Modem World"The security situation in the world is surprisingly not stable in the 21 st century and the humanity is exposed to unexpected challenges that affect each of us.Chemical and radioactive substances are wonderful helpers and a great result of human progress.Although they are supportive, on the other hand, they can be very dangerous, in the event of accidents or deliberate misuse.Therefore, it is very important to organize conferences of this type, where we, scientists, can participate in promoting world security and safety. Computer science Graphite, nuclear technology, radiation studies
Authors: R. Dimitrova | Mariela Dimitrova
Source:  (article, 2024-12-11)
Field: Chemistry — Organic Chemistry

NATURAL RADIOPROTECTORS AND ANTIOXIDANTS AGAINST IONIZING RADIATION I welcome all participants of the scientific forum "Radiation Safety in the Modem World"The security situation in the world is surprisingly not stable in the 21 st century and the humanity is exposed to unexpected challenges that affect each of us.Chemical and radioactive substances are wonderful helpers and a great result of human progress.Although they are supportive, on the other hand, they can be very dangerous, in the event of accidents or deliberate misuse.Therefore, it is very important to organize conferences of this type, where we, scientists, can participate in promoting world security and safety. Ionizing radiation ; Natural (archaeology) ; Irradiation ; Physics ; Nuclear physics Free Radicals and Antioxidants ; Radiation Effects and Dosimetry ; Phytochemical and Pharmacological Studies
Source: International Journal of Agriculture and Biosciences (article, 2024-01-01)
Field: Materials Science — Materials Chemistry

Optimizing Growth of Crystal Lettuce Using Controlled Environments in a Thai Plant Factory The agricultural sector in Thailand faces significant challenges due to high summer temperatures reaching 40-43C, which adversely affect plant growth and increase susceptibility to diseases.This study investigates the efficacy of using a Plant Factory with Artificial Lighting (PFAL) to optimize the growth conditions for Crystal Lettuce, aiming to enhance plant development and yield under controlled environments.The research focuses on determining the ideal environmental parameters within a PFAL to maximize the growth of Crystal Lettuce.Crystal Lettuce seeds were initially grown in cups filled with a perlitevermiculite mix (3:1) and a nutrient solution with an electrical conductivity (EC) of 1400-1600S/cm and pH of 5.5-6.2.These seedlings were exposed to white LED lights with an intensity of 17750Lux for 10 hours daily.After initial growth, the seedlings were transplanted into a nutrient solution with an EC of 1750-1830S/cm and subjected to yellow-white LED lights.The grow room, covering 160m 2 , maintained a controlled temperature of 30C, humidity at 71%, and CO2 levels between 876-942ppm.Light intensity across different planting layers ranged from 7474 to 25722Lux.Results demonstrated that Crystal Lettuce plants in the middle of the planting layer, receiving approximately 23691Lux, exhibited the most significant growth, with a plant height of 18.75cm, fresh weight of 91.50g, and canopy width of 22.00cm.In contrast, plants on the edges with lower light intensities showed reduced growth.The study concludes that controlled environmental conditions in a PFAL, particularly optimized light intensity, substantially improve the growth of Crystal Lettuce.This research supports the potential of PFAL systems to enhance agricultural productivity in regions with challenging climates. Factory (object-oriented programming) ; Plant factory ; Plant growth ; Biology ; Biotechnology ; Agronomy ; Computer science Crystallization and Solubility Studies
Authors: Dyah Sulistyani Rahayu | Laksmi Ambarsari | Waras Nurcholis | Syalwa Ersadiwi Shalsabilla | Alma Fadilah | Muhammad Fajar Sanjaya | Rahmad Ramdani Sambari | Firdaus Ramadhan | Mohammad Syamsul Rijal | Intan Ghaisani Nadyaputri | Irawan Sugoro
Source: Journal of Applied Biology & Biotechnology (article, 2024-01-01)
Field: Chemistry — Inorganic Chemistry

Microbial diversity of biofilm in spent nuclear fuel storage pond Spent nuclear fuel (SNF) storage is a facility requiring careful attention to prevent corrosion, with microbial-induced corrosion (MIC) being a significant contributing factor. While previous investigations have genetically identified total microbes and sulfate-reducing bacteria (SRB) in SNF storage ponds, similar studies have highlighted the dominance of Proteobacteria and Firmicutes in these environments. Therefore, this study aimed to identify the diversity of bacteria biofilm in SNF storage ponds through a metagenomic approach, with a specific focus on those potentially causing MIC. The results showed that the rack had the highest number of taxa based on taxonomic identification. The bacteria community on the rack, at the phylum level, was dominated by Proteobacteria (34.04%), Firmicutes (24.96%), and Chloroflexi (20.52%). Chloroflexi constituted the majority of the bacteria community on the pool floor (91.09%), while on the pool walls, Chloroflexi (45.17%) and Proteobacteria (44.02%) dominated almost equally. Metabolic pathway analysis further confirmed the activity of MIC in biofilm by the presence of MIC-related pathways. These findings contribute novel insights into the microbial composition of biofilms in SNF storage ponds, providing a foundation for future studies on the prevention and management of MIC in such facilities. Spent nuclear fuel ; Biofilm ; Diversity (politics) ; Environmental science ; Waste management ; Ecology ; Chemistry ; Biology ; Engineering ; Bacteria ; Paleontology ; Political science Radioactive element chemistry and processing ; Radioactive contamination and transfer ; Nuclear and radioactivity studies
Authors: Fábio Gonçalves Ferreira | ÉNTONY D. DANTAS | Déborah Cordeiro de Andrade | Leonardo dos Santos Pereira | OSVALDO CHIAVONE-FILHO
Source:  (article, 2024-01-01)
Field: Materials Science — Materials Chemistry

SOLUBILIDADE DO CACO3, NA PRESENÇA DE NACL E ATMOSFERA DE CO2, NO PROCESSO DE REGENERAÇÃO DO MEG A presena de gua nos sistemas de produo de campos de petrleo e gs ocasiona inmeros problemas operacionais.Nos campos onde h a elevada produo de gs, podemos destacar a formao de hidratos de gs e incrustaes de sais.A formao de hidratos de gs e incrustaes de sais ocasionam severos bloqueios e corroso da tubulao, revestimento e outros pontos de produo, causando reduo da vazo dos fluidos e de desempenho dos equipamentos.A preveno da formao de hidratos de gs demanda amplos esforos resultando custos operacionais significativos.O monoetileno glicol (MEG) um dos inibidores de formao de hidratos mais utilizado.O MEG injetado na cabea dos poos para garantir o escoamento do fluido at a plataforma, onde deve ser posteriormente regenerado.Durante o processo de regenerao, o MEG apresenta-se na forma de uma soluo aquosa composta da gua produzida, sais provenientes do reservatrio e dixido de carbono (CO2).A presena do MEG nas correntes aquosas do processo provoca a reduo da solubilidade, principalmente, dos sais de carbonato presentes.Este estudo investiga as condies ideais para a recuperao do MEG, analisando os efeitos da temperatura, da presso parcial de CO2 e da concentrao de cloreto de sdio em misturas aquosas contendo carbonato de clcio.Experimentos de solubilidade do carbonato de clcio com adio de cloreto de sdio em misturas aquosas de monoetilenoglicol e borbulhamento de dixido de carbono foram desenvolvidos usando um mtodo sinttico desenvolvido.A presso parcial de CO estudada foi de aproximadamente 1 bar, enquanto a temperatura foi ajustada entre 15 e 50 C.As concentraes de MEG cobriram toda a faixa de porcentagem mssica, e o cloreto de sdio foi adicionado em trs concentraes distintas: 0,17, 0,51 e 0,91 mol/kg.Na clula de solubilidade, o pH foi determinado no final do ensaio, pois a dissoluo do carbonato atua no sentido de aumento do pH, enquanto o borbulhamento de CO2 diminui o mesmo.A condutividade foi utilizada como referncia na determinao da solubilidade.A anlise dos dados revelou que tanto o aumento da temperatura quanto o aumento da concentrao mssica de MEG resultam na diminuio da solubilidade do carbonato de clcio (salting-out).Por outro lado, a presena de CO e de NaCl no sistema, aumentam a solubilidade do CaCO (salting-in), at determinada concentrao de NaCl.Uma abordagem termodinmica semiemprica Physics Thermal and Kinetic Analysis ; Chemistry and Chemical Engineering
Authors: Ж.А. Кочкаров | А.А. Байсангурова | З.С. Хасбулатова
Source:  (article, 2024-11-29)
Field: Chemistry — Inorganic Chemistry

ВНУТРЕННЕЕ СТАБИЛЬНОЕ СЕЧЕНИЕ NA2WO4-K2WO4-PBWO4-NACL∙NA2WO4 ЧЕТЫРЕХКОМПОНЕНТНОЙ ВЗАИМНОЙ СИСТЕМЫ NA,K,PB//CL,WO4, ХИМИЧЕСКИЙ СИНТЕЗ ВОЛЬФРАМАТА СВИНЦА И ОКСИДНЫХ ВОЛЬФРАМОВЫХ БРОНЗ СВИНЦА Впервые дифференциальным термическим анализом и РФА изучены фазовые диаграммы внутренних сечений Na2WO4-K2WO4∙PbWO4-NaCl∙Na2WO4 и Na2WO4-K2WO4-PbWO4-NaCl∙Na2WO4 четырехкомпонентной взаимной системы Na,K,Pb//Cl,WO4. Показано, что трехкомпонентная система Na2WO4-K2WO4∙PbWO4-NaCl∙Na2WO4 (внутреннее сечение) является простой эвтектической. Выявлено, что инконгруэнтное соединение K2WO4∙Na2WO4 переходит в конгруэнтное соединение, поэтому внутреннее сечение NaCl∙Na2WO4-K2WO4∙PbWO4-K2WO4∙Na2WO4 становится стабильным триангулирующим. Выявлена возможность химического синтеза оксидных вольфрамовых бронз свинца в ионных солевых расплавах четырехкомпонентной системы Na2WO4-K2WO4-PbWO4-NaCl∙Na2WO4. Computer science ; Chemistry ; Physics Inorganic Chemistry and Materials ; Hydrogen Storage and Materials ; Chemical Synthesis and Characterization
Authors: Ярова, Тетяна Юріївна | Хмизенко, Роман Володимирович | Яновська, Ганна Олександрівна
Source: The Scientific Issues of Ternopil Volodymyr Hnatiuk National Pedagogical University Series pedagogy (article, 2024-10-31)
Field: Materials Science — Materials Chemistry

Аналіз впливу функціональних добавок на корозійну стійкість лакофарбових покриттів The paper deals with the issue of protecting metals from corrosion, which can damage their structures. Anti-corrosion coatings are widely used to ensure the durability of steel structures. It was described that the durability of the coating depends on the chemical and physical characteristics of the system, such as the type of coating, dry film thickness, water resistance, and adhesion. The importance of artificial aging tests for assessing the durability of coatings is considered, emphasizing that the results of such tests should be interpreted with caution, taking in consideration that artificial aging may not have the same effect as natural exposure. Various anti-corrosion additives for acrylic water-dispersion enamels are also described, which can improve the corrosion resistance of the coating, depending on the service conditions. The object of the research is the properties of enamels with functional additives in salt fog. The study results of the effectiveness of the anti-corrosion additives in acrylic enamels using salt fog from the BGD 881/S chamber are discussed. The research showed that the main requirement for increasing the effectiveness of the anti-corrosion additive in acrylic LPM is a comprehensive approach to improvement of the coating barrier properties, which additionally reduces the aggressive influence of the environment. The advantages of new complex anti-corrosion additives compared to traditional anti-corrosion pigments are multifunctionality – complex additives like Askonium 142 DA contain several active components that affect various coating properties, including anti-corrosion protection, adhesion, and water resistance. Traditional pigments, such as zinc phosphate, usually have only one function – to create a protective film on the metal. The main research idea of the article is to study the influence of anti-corrosion additives in paint coatings for metal protection from corrosion and the extension of the service life of structures. Durability ; Coating ; Corrosion ; Service life ; Conversion coating ; Zinc ; Acrylic resin Corrosion Behavior and Inhibition ; Environmental and Industrial Safety ; Polymer Science and Applications
Authors: J. Nabiałek | T. Jaruga
Source: Archives of Metallurgy and Materials (article, 2024-04-11)
Field: Materials Science — Polymers and Plastics

Numerical Modelling of Microcellular Foaming Injection Moulding The results of computer modelling of an injection moulding process with microcellular foaming (MuCell®) were presented in this work. The process is based on the dissolving nitrogen in a liquid polymer which is possible when nitrogen is in supercritical fluid state (SCF). After pressure drop of the melt in the injection mould the intensive nucleation of pores occurs and, as the result, the material with high concentration of small pores is created. The pores obtained in this way are of much smaller size than in a conventional foaming process. The pore size in the cross-section of an exemplary injection moulded part was calculated in the computer modelling and compared to the results of microscopical investigation made on the real injection moulded part. It was found that the size of the pores depends on the flow length inside the injection mould and on the position in the part’s cross-section. Materials science ; Supercritical fluid ; Composite material ; Injection moulding ; Dissolution ; Blowing agent ; Nucleation ; Polymer ; Work (physics) ; Pressure drop ; Drop (telecommunication) ; Chemical engineering ; Mechanical engineering ; Mechanics ; Thermodynamics ; Polyurethane Polymer Foaming and Composites ; Injection Molding Process and Properties
Authors: Paul Jackson | Eleni A. Kisty | Vandan Pradhan | Christopher Swank | Luke Bohrer | Tammy L. Nolan | Eranthie Weerapana | David J. Lapinsky
Source: ACS Omega (article, 2024-10-02)
Field: Chemistry — Organic Chemistry

Appendage- and Scaffold-Diverse Electrophilic and Photoreactive Probes for Integrated Phenotypic Screening–Target Identification Campaigns via a Minimalist Bifunctional Isocyanide One of the grand challenges in chemical biology is identifying a small-molecule modulator for all proteins within a proteome. To expand the variety and number of ligandable proteins for drug discovery, the objective of this study was to synthesize and evaluate the protein target profiles of electrophilic and photoreactive fully functionalized small-molecule probes (FFSMPs) featuring increased scaffold-, appendage-, and protein-reactive functional group (PRFG) diversity. FFSMPs contain: (1) a protein-binding motif, (2) an electrophilic or photoreactive PRFG for target protein capture, and (3) a terminal alkyne for click chemistry-based proteomic applications. These compounds can be directly applied in phenotypic screening programs to identify ligand-protein pairs in cells unbiasedly. Herein, we highlight 17 examples from 34 structurally diverse FFSMPs featuring five electrophiles, three photoreactive groups, and 15 chemical scaffolds. Essential to the synthesis of the FFSMPs was a new minimalist bifunctional isocyanide in an "isocyanide-based multicomponent reaction-Boc deprotection-arming" synthetic sequence. To the best of our knowledge, this is the first report concerning the preparation of appendage- and scaffold-diverse FFSMPs for integrated phenotypic screening-target identification campaigns with the ability to examine either electrophilic or photoreactive PRFGs. In contrast, the status quo for such studies has been appendage-diverse FFSMPs comprised of a single chemical scaffold and a single PRFG, which limits efficient target protein capture and/or chemical space sampling significantly in the quest for discovering new drug targets and/or compounds with novel mechanisms of action. Phenotypic screening of the electrophilic members of our library identified several FFSMPs with potent antiproliferative activity against MCF10CA1a breast cancer cells. One of these FFSMPs (Compound <b>4a</b>) covalently targeted and potently inhibited protein disulfide isomerase A1 (PDIA1). This study supports the continued use of minimalist bifunctional isocyanides as valuable building blocks for preparing structurally diverse FFSMPs for integrated phenotypic screening-target identification campaigns. Identification (biology) ; Bifunctional ; Isocyanide ; Scaffold ; Phenotypic screening ; Electrophile ; Appendage ; Phenotype ; Chemistry ; Computational biology ; Biology ; Medicine ; Biochemistry ; Stereochemistry ; Anatomy ; Gene ; Botany Click Chemistry and Applications ; Advanced biosensing and bioanalysis techniques ; Chemical Synthesis and Analysis
Authors: Zita Balatoni-Oláh
Source: Magyar kémiai folyóirat, Kémiai közlemények (article, 2024-01-01)
Field: Materials Science — Materials Chemistry

Radiogyógyszer-kutatás aktualitása itthon és világviszonylatban A gyógyítás egyidős az emberiséggel. Már az ókori kultúrákban megtalálhatók írásos emlékek műtétekről, fogorvoslásról vagy a holttestek kezeléséről. A történelem folyamán a találmányok és technikai újítások segítségével az orvostudomány is folyamatosan fejlődött. Az orvostudomány speciális szakterületéhez, a nukleáris medicinához vezető utat több Nobel-díjas kutatómunka kövezi ki. Wilhelm Conrad Röntgen 1895-ben a katódsugárzás vizsgálata során felfedezte a röntgensugárzást, és annak fluoreszkáló hatását. Publikációja több tudósnak inspirációval szolgált, többek között Henri Bequerelnek, aki ennek hatására fedezte fel a természetes radioaktivitást a kálium-uranil-diszulfát vizsgálata során Political science Graphite, nuclear technology, radiation studies