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Physical Chemistry - Science topic

Analysing physicochemical phenomena using techniques of physics.
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Publications related to Physical Chemistry (10,000)
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Bozok Journal of Science is an international scientific and peer-reviewed journal published by Yozgat Bozok University, Faculty of Arts and Sciences. The journal aims to increase and expand studies that will contribute to the field of science. The journal includes articles in all fields of science, particularly biology, physics, chemistry and mathe...
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Taxis is ubiquitous in biological and physical chemistry systems as a response to various external stimulations. We prepared aqueous droplets containing Belousov-Zhabotinsky (BZ) solutions suspended on an oleic acid oil phase subject to DC electric field and found that these BZ droplets undergo chemically driven translational motion towards the neg...
Conference Paper
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The National Selection for State Entrance or SNMPTN is the most common choice for high school students who are looking for higher education. Statistics is one of the study programs in Tanjungpura University that has a capacity of 20 seats for SNMPTN. Due to the low capacity, the prospective students must plan their best strategy to pass through SNM...
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The Population growth and decay issues are one of the most pressing issues in many sectors of study. These issues can be found in physics, chemistry, social science, biology, and zoology, among other subjects. We introduced the solution for these problems in this paper by using the SEJI (Sadiq- Emad- Jinan) integral transform, which has some mathe...
Preprint
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Since the 1990s, as we know, comparability and incomparability graphs find use in experimental sciences, particularly in chemistry and physical chemistry as well as in statistical physics, to characterize molecular properties, order isomers or specify the topology of certain structures such as chemical structures. In this mostly historical article,...
Cover Page
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In past decades, graphene oxide (GO) nanomaterials have revealed interesting properties, which make them promising candidates for technological applications such as water purification or enzyme immobilization. Computational methodologies such as Molecular Dynamics are invaluable tools to understand physical–chemical phenomena at the molecular level...
Article
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Microplastic pollution in aquatic ecosystems has drawn attention not only because microplastics are likely to accumulate anywhere but also because they cause negative impacts both to aquatic biota and, indirectly, to public health, as a result of their presence. The understanding of the distribution and accumulation patterns of this “new contaminan...
Article
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The purpose of this study is to find out facilitative strategies in supporting the implementation of an independent curriculum in MAN Barito Selatan plus Skills. The method used in this study is a quality case study approach. The subjects in this study were teachers and staff involved in the implementation of an independent curriculum in madrasas....
Article
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This article describes the use of an English-Spanish Parallel Corpus of Science and Technology Texts which pursues the objective of enhancing the translation competence of the fourth-year students of the degree course English Language with Second Foreign Language (French), at Universidad Central “Marta Abreu” de Las Villas. The research adopted a m...
Article
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Applications of vibrational spectroscopy throughout the field of physical chemistry are limited by detectors with poor temporal resolution, low detection efficiency, and high background levels. Up to now, the field has relied upon detectors based on semiconducting materials with small bandgaps, which unavoidably leads to a compromise between good s...
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Symplectic maps can provide a straightforward and accurate way to visualize and quantify the dynamics of conservative systems with two degrees of freedom. These maps can be easily iterated from the simplest computers to obtain trajectories with great accuracy. Their usage arises in many fields, including celeste mechanics, plasma physics, chemistry...
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Molecular dynamics simulations are a core element of research in physics, chemistry and biology. A key aspect for extending the capability of simulation tools is providing access to advanced sampling methods and techniques that permit calculation of the relevant, underlying free energy landscapes. In this sense, software tools that can be seamlessl...
Article
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Molecular simulation is becoming a standard tool for researchers working in different fields, such as physics, chemistry, material science, biology, medicine, engineering, and many others [...]
Article
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This paper aims to highlight the absolute competitiveness between positive and normative economics. The article presents this controversy as a pretext to analyse a specific field of operation of ecological economics. The normative approach in the ecological economics is needed in the complex age of increasing deficits and confronting threats to bio...
Article
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In lieu of continuous time active feedback control in complex systems, nonlinear dynamics offers a means to generate desired long-term responses using short-time control signals. This type of control has been proposed for use in resonators that exhibit a plethora of complex dynamic behaviors resulting from energy exchange between modes. However, th...
Article
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Water wave propagation phenomena still attract the interest of researchers from many areas and with various objectives. The dispersive equations, including a large body of classes, are widely used models for a great number of problems in the fields of physics, chemistry and biology. For instance, the Korteweg-de Vries (KdV) equation is one of the f...
Preprint
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A fundamental, Quantum Mechanical description of photoactivation of a generic photosensitizer and the ensuing transfer of energy to endogenous oxygen as part of the Type II pathway to photodamage during photodynamic therapy (PDT) is presented. The PS and molecular oxygen are approximated as two-electron molecules. Conservation of energy and of angu...
Preprint
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This paper gives a new perspective on how to solve the second-order linear differential equation written in normal form. Extending the argument of the potential to a complex number leads to solving exactly the Schrödinger equation when the potential is complex using the factorization method. This method leads to solving two Riccati nonlinear equati...
Experiment Findings
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Following the success of the first edition of the Meeting on Research and Innovation (R2I'18) organized by the research team in electronics, instrumentation, and measurements of the poly-disciplinary faculty of Beni Mellal (FPBM) in collaboration with research structures from other universities on May 10 and 11, 2018, at the FPBM, the 2023 edition,...
Preprint
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Theoretical and computational frameworks of modern science are dominated by binary structures. This binary bias, seen in the ubiquity of pair-wise networks and formal operations of two arguments in mathematical models, limits our capacity to faithfully capture irreducible polyadic interactions in higher-order systems. A paradigmatic example of a hi...
Article
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Stimulating and harnessing circularly polarized luminescence (CPL) is not only a sine qua non for fundamentally unveiling chirogenesis in physical chemistry, but also a pivotal prerequisite for implementation of such phenomenon in research fields including chiral optoelectronics and theranostics. Herein, red‐emissive carbonized polymer dots (CPDs)‐...
Article
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The three well known ordering of the two constituting atomic species in a bimetallic nano-alloy-core-shell, janus and mixed structural patterns, may be interconvertable depending on synthesis conditions. Using first principles electronic structure calculations in the present work, we look for the microscopic origin for such structural transformatio...
Chapter
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This paper presents a partial review of optimal experimental design applied to physicochemical models. The goal is to serve as an introduction to the discipline for all those who carry out laboratory experiments observing phenomena related to physical chemistry. The optimal design of experiments does not make sense unless the proposed designs can b...
Article
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A. Fractional calculus is a new approach for modeling biological and physical phenomena with memory effects. Fractional calculus uses differential and integral operators including non-integer orders to study the non-linear behavior of physical and biological systems with some degrees of fractionality or fractality. Since the long memory properties...
Preprint
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The literature was scoped to help place mass spectrometric (MS) platforms in the spotlight of the life sciences, as a tool of OMICS and OMICS 2.0 technologies. These methods were discussed, and their feasibility was highlighted in many reviews that have been periodically published, in addition to the most recently developed term OMICS 2.0. This aut...
Article
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Scientific progress, or scientific change, has been an important topic in the philosophy and history of science. Previous work has developed quantitative approaches to characterize the progression of science in different fields, but how individual scientists make progress through their careers is not well understood at a comprehensive scale. We cha...
Article
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The nonlinearity parameter B/A is a characteristic of liquids and soft matter, which gains growing attention due to its sensibility to the composition of materials. This makes it a prospective indicator for nondestructive testing applications based on the ultrasound sounding suitable for a variety of applications from physic chemistry to biomedical...
Article
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A pesquisa teve como objetivo geral analisar como as políticas públicas de inclusão – no que tange ao Atendimento Educacional Especializado (AEE) – são colocadas em prática no atendimento aos alunos PcD do ensino médio da Escola Estadual Professor Sebastiao Augusto Loureiro Filho, município de Manaus – Estado do Amazonas, Brasil. A investigação obj...
Chapter
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The history of the acronym STEM (Science, Technology, Engineering, and Mathematics) started at the beginning of the last decade of the past century. The acronym was originally written as SMET (Science, Mathematics, Engineering, and Technology), before then being changed due to phonetic reasons to the well-known STEM. The STEM movement gained moment...
Article
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Cancers are driven by multiple genetic mutations but evolve to evade treatments targeting specific mutations. Nonetheless, cancers cannot evade a treatment that targets mitochondria, which are essential for tumor progression. Iridium complexes have shown anticancer properties, but they lack specificity for their intracellular targets, leading to un...
Article
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Attitude is very complex and sticky construct. Pakistani sector educational institutions offer three educational streams; Physics, Chemistry, and Biology. Chemistry is a painstaking subject for secondary school students. Students remain curious during the process of learning. Students move away from Chemistry understanding due to complications....
Article
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The paper presents the study on the problem of the formation of the personality of a student a future engineer as a moral person, an aspect of which is the definition of the value content of academic disciplines studied at a technical university, and the implementation of this content in the moral education of students. The relevance of the study i...
Article
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The localized surface-plasmon resonance of metal nanoparticles and clusters corresponds to a collective charge oscillation of the quasi-free metal electrons. The polarization of the more localized d electrons opposes the overall polarization of the electron cloud and thus screens the surface plasmon. By contrast, a static electric external field is...
Article
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This work presents a corpus of measurement methodologies utilized during a multidisciplinary project, aiming at the protection and conservation of ancient steel joints (clamps and dowels) of the Acropolis monuments, undertaken by the Acropolis Restoration Service (YSMA). The Laboratory of Physical Chemistry of the National Technical University of A...
Article
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Kirova E., Geneva M., Petrova M., Miladinova-Georgieva K., Sichanova M., 2022: Employment of nanoparticles for improvement of plant growth and development.-Botanica, 28(2): 113-132. https://doi.org/10.35513/Botlit.2022.2.4 Nanotechnology, with its research and results, has become one of the essential fields among scientific disciplines. Nanotechnol...
Poster
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ALÜMİNYUM HİDROLİZ MEKANİZMASININ SU ADSORPSİYON ÖZELLİKLERİNİN DFT İLE İNCELENMESİ Esra Eroğlu1,2,*,Rasiha Nefise Mutlu1,Hande Toffoli2,Mehmet Karaca3,Jayaraman Kandasamy1, İskender Gökalp1 esraer@metu.edu.tr, ergluesra@gmail.com 1 Orta Doğu Teknik Üniversitesi, Makine Mühendisliği Bölümü, 06800, Ankara, Türkiye 2 Orta Doğu Teknik Üniversitesi...
Article
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In Ayurveda, menstrual blood is considered as updhatu of rasa dhatu. Normally it begins at the age of twelve and ends at the age of fifty in women. It is a cyclical bleeding occurring every month for three to five days. Normal menstruation is currently defined as cyclic bleeding that occurs from the uterine corpus between menarche and menopause.The...
Article
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Functionalized graphene offers great potential in the field of rapid detection of gases at room temperature. We performed first-principles calculations to study the suitability of 4-sulfobenzenediazonium salts (4SBD) as bandgap modifier in graphene. The signature of unpaired spins is evidenced near the Fermi level owing to the symmetry breaking of...
Article
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It is well known that classical derivatives may be generalized to noninteger orders using fractional calculus. A dynamic fractional order model, which is often based on the idea of differentiation or integration of noninteger order, is the best way to describe many dynamic systems. Comparatively to their integer order counterparts, fractional order...
Article
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O consumo de água pelo ser humano é indispensável, porém, ela deve estar isenta de contaminações, que sejam química, física, biológica ou microbiológica, e para isso devendo tratá-la conforme regras estabelecidas por órgãos fiscalizadores ou de saúde pública contribuindo para eliminar possíveis microrganismos existentes nela antes do seu consumo. O...
Article
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Heme proteins are known to perform a plethora of biologically important functions. This article reviews work that has been conducted on various class I cytochrome c proteins over a period of nearly 50 years. The article focuses on the relevance of symmetry-lowering heme–protein interactions that affect the function of the electron transfer protein...
Article
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The perovskite lattice strain correlating to its physical chemistry not only impacts the optoelectronic properties but also the long‐term stability. The relaxation of perovskite lattice strain has been recognized as an important pathway to improve photovoltaic performance and broaden the application scope. With the growth of research interest and t...
Article
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ConspectusRelaxometry is a technique which makes use of a specific crystal lattice defect in diamond, the so-called NV center. This defect consists of a nitrogen atom, which replaces a carbon atom in the diamond lattice, and an adjacent vacancy. NV centers allow converting magnetic noise into optical signals, which dramatically increases the sensit...
Article
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The low efficiency of treatment strategies is one of the main obstacles to developing cancer inhibitors. Up to now, various classes of therapeutics have been developed to inhibit cancer progression. Peptides due to their small size and easy production compared to proteins are highly regarded in designing cancer vaccines and oncogenic pathway inhibi...
Article
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Perovskite composite oxides exhibit special crystal structures. Their properties could be enhanced greatly after doping. Many disciplines, including physics, chemistry, and materials, are focusing their researches on perovskite materials. In standard perovskite structures, oxides with different composites can be created by substituting A or B site...
Article
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The objective of this article is to investigate the curricular changes imposed by the promulgation of the National Common Curricular Base (BNCC) in the final years of the Elementary School of Sciences in public schools education network, as well as to investigate adequacy of the curricular matrices of some Science teachers training courses to work...
Article
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Deuterated organic molecules are of interest for many applications ranging from mechanistic investigations in basic organic and physical chemistry to the development of new pharmaceuticals. Thus, methodologies for isotope labelling reactions continue to be important. Here, a convenient methodology for hydrogen/deuterium exchange reactions in electr...
Chapter
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The history of the development of cyclotron targets from technetium and the production of ruthenium-97 by the reaction 99Tc(p,3n)97Ru in the works of the IPChE RAS and JINR. To assess the possibility of using the reaction 99Tc(p,3n)97Ru as a source of 97Ru in 1992-1996. in Russia, in the works of the Institute of Physical Chemistry, Russian Academy...
Chapter
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The article describes the history of the Laboratory of Radiochemical Researches in the Institute of Physical Chemistry Russian Academy of Sciences
Article
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NMR spectroscopy is a powerful approach for the analysis of mixtures. Its usefulness arises in large part from the vast landscape of methods, and corresponding pulse sequences, that have been and are being designed to tackle the specific properties of mixtures of small molecules. This feature article describes a selection of methods that aim to add...
Preprint
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Photoionisation is one of the main mechanisms at work in the gaseous environment of bright astrophysical sources. Many information on the gas physics, chemistry and kinematics, as well as on the ionising source itself, can be gathered through optical to X-ray spectroscopy. While several public time equilibrium photoionisation codes are readily avai...
Article
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The segmentation of tomographic images of the battery electrode is a crucial processing step, which will have an additional impact on the results of material characterization and electrochemical simulation. However, manually labeling X-ray CT images (XCT) is time-consuming, and these XCT images are generally difficult to segment with histographical...
Article
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An exploratory study to determine the effectiveness of discussion sessions as a teaching strategy of Thermodynamics in Basic Physical Chemistry of fundamental concepts in this area as spontaneity by explaining students according to their ideas. A previously validated questionnaire was used as an instrument on Thermochemistry, Enthalpies of Bonding,...
Article
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In today’s era of rapid development in science and technology, the development of digital technology has increasingly higher requirements for data processing functions. The matrix signal commonly used in engineering applications also puts forward higher requirements for processing speed. The eigenvalues of the matrix represent many characteristics...
Article
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It is well known that two-dimensional (2D) MXene-derived quantum dots (MQDs) inherit the excellent physicochemical properties of the parental MXenes, as a Chinese proverb says , “Indigo blue is extracted from the indigo plant, but is bluer than the plant it comes from.” Therefore, 0D QDs harvest larger surface-to-volume ratio, outstanding optical p...
Article
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The Annual Meeting of the Subdivision of Photochemistry, Photophysics and Photoscience (SP2P) was held on June 7th and 8th 2022 at the École Normale Supérieure (ENS) Paris-Saclay in Gif-sur-Yvette. The SP2P group forms part of the Physical Chemistry Division, which itself is a unit within the French Chemical Society (Société Chimique de France, SCF...
Article
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The difference and differential equations have played an eminent part in nonlinear dynamics systems, but in the last two decades one-dimensional difference maps are considered in the forefront of nonlinear systems and the optimization of transportation problems. In the nineteenth century, the nonlinear systems have paved a significant role in analy...
Article
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For over five decades, studies in the field of chemical physics and physical chemistry have primarily aimed to understand the quantum properties of molecules. However, high-resolution rovibronic spectroscopy has been limited to relatively small and simple systems because translationally and rotationally cold samples have not been prepared in suffic...
Article
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Natural symmetry exists in several phenomena in physics, chemistry, and biology. Incorporating these symmetries in the differential equations used to characterize these processes is thus a valid modeling assumption. The present study investigates COVID-19 infection through the stochastic model. We consider the real infection data of COVID-19 in Sau...
Preprint
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This Viewpoint responds to the analysis of 2D IR spectra of vibration cavity polariton in the study reported in The Journal of Physical Chemistry Letters (Duan, et al. 2021, 12, 11406). That report analyzed 2D IR spectra of strongly coupled molecules, such as W(CO)6 and nitroprusside anion, based on subtracting a background signal generated by pola...
Preprint
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Soils are losing increasing amounts of carbon annually to freshwaters as dissolved organic matter (DOM), which, if degraded, can accelerate climate change. DOM is more susceptible to degradation closer to its source and becomes increasingly dominated by the same, difficult-to-degrade compounds as degradation proceeds. However, the processes underly...
Article
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For decades, the light-matter interaction (LMI) based on Born-Oppenheimer (BO) approximation has dominated the fields of photonics, materials, and condensed-matter physics. However, in polar crystals, the BO approximation is not applicable when stimulated phonon polaritons are excited. Unlike the studies on topological physics and physical chemistr...
Conference Paper
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Форум химиков-токсикологов «Современные аспекты химико-токсикологического и судебно-химического анализа», проводившийся 17-18.11.2022 в Москве, на базе Института физической химии и электрохимии им. А.Н. Фрумкина РАН (ИФХЭ РАН). Организатор - Ассоциация специалистов по химико-токсикологическому и судебно-химическому анализу (АСХТАиСХА) и Институт фи...
Book
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This monograph is the result of the analytical work of graduate students and teachers of the Scientific and Educational Centers of the Institute of Physical Chemistry and Ecology of the Russian Academy of Sciences, Moscow State University. M.V. Lomonosov and RKhTU im. DI. Mendeleev in the field of physical chemistry, radiochemistry and electrochemi...
Article
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The development of novel materials with microstructures is now a trend in food science and technology. These microscale materials may be applied across all steps in food manufacturing, from raw materials to the final food products, as well as in the packaging, transport, and storage processes. Microfluidics is an advanced technology for controlling...
Book
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Some features of the development of modern natural sciences in relations with officials regarding the publication activity of scientists are discussed. Based on the declassified documents of the Nobel Committees for Physics, Chemistry, Physiology or Medicine in Stockholm, a scientometric analysis of the procedure for nominating candidates for the N...
Article
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RESUMEN Este artículo da a conocer los índices de repitencia y sus causas en el sistema educativo de la Facultad de Ciencias Químicas en la Universidad Central del Ecuador. Durante el estudio se utilizó la metodología de mejora reactiva y un censo a estudiantes matriculados en el periodo marzo-agosto 2017. Los resultados indican un índice de repite...
Conference Paper
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Introducción La necesidad de una nosografía y una taxonomía de las enfermedades o trastornos mentales 1 surge por una parte de la constatación de la existencia de diferentes formas de expresar el sufrimiento que la persona padece (delirios, ansiedad, tristeza, somatizaciones, etc) y por otra parte, de la necesidad de tratar de entender sus posibles...