jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Robert Colby | D. L. Carpenter
Source: Microscopy and Microanalysis (article, 2021-07-30)
Field: Materials Science — Surfaces, Coatings and Films

Fluence-dependent electron energy loss spectroscopy mapping for beam-sensitive polymers Polymer blends and composites would benefit from high spatial resolution mapping with interpretable chemical contrast. Electron energy loss spectroscopy (EELS) can identify polymer type, and potentially even subtler changes to bonding, packing, and molecular orientation. However, most polymers evidence beam-induced changes at fluences well less than 10 electrons/ 2 . For a given signal to noise ratio (SNR), the potential spatial resolution is then limited by the fluence and the contrast. For instance, at the carbon K-edge, one would expect on the order of only 10 counts/channel for a pixel size of 100 nm at 10 electrons/ 2 . Depending on the contrast between the carbon K-edges of the materials to be mapped, 10 counts/channel may not be sufficient even for direct electron detectors. Fluence ; Electron energy loss spectroscopy ; Materials science ; Cathode ray ; Spectroscopy ; Energy-dispersive X-ray spectroscopy ; Electron ; Atomic physics ; Energy (signal processing) ; Beam (structure) ; Optics ; Physics ; Nanotechnology ; Scanning electron microscope ; Nuclear physics ; Transmission electron microscopy Electron and X-Ray Spectroscopy Techniques ; Advanced Electron Microscopy Techniques and Applications ; Integrated Circuits and Semiconductor Failure Analysis
Authors: Speaker | Massimo Villari | Ian Akyildiz | Risto Miikkulainen | George Karagiannidis | Maurizio Dcina | Dimitrios Kallergis | Georgios Papadopoulos | Bruno Sousa | Nuno Antunes | Miroslav Skoric | Zhiliang Wang | Jiahai Yang | Xia Yin | Xingang Shi | ; China | ); Keqin Li | Jianguo Jiang | Clmence Mauger | Jules Verne | ); France | Jean-Luc Gilles Dequen | Gal Gurin | Mahec Le | Yixi Zhang | Xueliang Sun | Xiang Qin | Chaoran Li | Siwei Wang | Yi Xie | Lorenzo Carnevale | Armando Phd | Francesco Ruggeri | Antonio Martella | Maria Celesti | Massimo Fazio | Villari | Carlo Giannelli | ; Ferrara | ) Italy | Alessandro Pernafini | Riccardo Zamagna | S Heitor | ; Ramos | M Daniel | Batista | Rui Lebre | Richard Demo | Souza | Christopher Ritter | Lan Thao Nguyen | Berit Frech | Maria Martinez | Shili Hu | Jiangfeng Li | Qinpei Zhao | Chenxi Zhang | Zijian Zhang | Yang Shi | Yi Ma | Tian Bai | Wenyu Zhang | Jian Hu | Shuang Li | Mingzhe Lu | Yan Wang | Xuping Xie ; Mohsin | Al-Saedi | Veselka Boeva | Ashwin Kannoth | Cungang Yang | Manuel Guanipa | Larice | Miguel Correia
Source: 2021 IEEE Symposium on Computers and Communications (ISCC) (article, 2021-09-05)
Field: Materials Science — Materials Chemistry

ISCC 2021 Conference Program Computer science ; Programming language Machine Learning in Materials Science ; Biomedical and Engineering Education ; Academic Publishing and Open Access
Authors: Arezoo Fereidonian Dashti | Hamidi Abdul Aziz | Mohd Nordin Adlan | Ali Huddin Ibrahim
Source: Research Square (preprint, 2021-04-26)
Field: Chemistry — Inorganic Chemistry

Performance of Horizontal Roughing Filter for Colour Removal of Palm Oil Mill Effluent Using Natural Adsorbent Abstract Palm oil wastewater treatment was investigated via a filtration process using raw and calcinated limestone. The column studies were conducted using different limestone sizes (4, 12, and 20 mm), calcination temperature (800°C and 600°C) and various filtration rates (20, 60, and 100 mL/min) and a comparison was made with raw limestone under similar conditions. The response surface methodology using central composite design was employed to optimize the process parameter. The experimental data was analyzed via the analysis of variance to identify the interaction between the parameters and the dependent parameter. The results showed that the colour removal increased with an increase in temperature (800 ºC) for filtration rate of 20 mL/min, the retention time of 317 min and the smaller size (4 mm) of limestone and decreased with an increase in the filtration rate and size of raw limestone. Based on the achieved results, the optimum condition for colour removal was at temperature 800°C (61%), 600 o C (56%) and raw limestone (49%) respectively with the same experimental setup (flow rate of 20 mL/min and limestone size of 4 mm). According to the statistical analysis, quadratic models demonstrated significant values (0.000) for the response (colour). Freundlich and Langmuir isotherms also provided good correlation coefficient for the colour removal. The data conforms to the Langmuir isotherm with the best fit model (R 2 = 0.7). Filtration (mathematics) ; Langmuir ; Calcination ; Response surface methodology ; Adsorption ; Raw material ; Effluent ; Chromatography ; Central composite design ; Pulp and paper industry ; Volumetric flow rate ; Coefficient of determination ; Mineralogy ; Materials science ; Chemistry ; Mathematics ; Environmental engineering ; Environmental science ; Statistics ; Thermodynamics ; Engineering Coconut Research and Applications
Authors: Nguyễn Hữu Trung | ĐỖ TRẦN HỒNG HẠT | Nguyễn Thị Thu Hà | TRẦN NGHỊ | TRỊNH VĂN DŨNG
Source: Journal of Science and Technology - IUH (article, 2021-09-30)
Field: Materials Science — Materials Chemistry

XÁC ĐỊNH THÔNG SỐ THỰC NGHIỆM QUÁ TRÌNH GIẢI PHÓNG URÊ CỦA PHÂN URÊ THÔNG MINH Phân urê thông minh (SUF) có cấu tạo gồm lớp màng bọc bên ngoài nên giúp kiểm soát quá trình giải phóng và duy trì hàm lượng dinh dưỡng phù hợp với nhu cầu cây trồng. Quá trình giải phóng chất dinh dưỡng có ý nghĩa quan trọng cho việc đánh giá chất lượng và tính chất của sản phẩm SUF. Mục tiêu nghiên cứu nhằm xác định cơ chế và mô hình giải phóng chất dinh dưỡng của phân SUF, từ đó khảo sát và tính toán các thông số thực nghiệm của quá trình giải phóng. SUF được sản xuất bằng hệ thống thiết bị bọc đĩa quay với màng bọc được làm từ vật liệu polyme phân hủy sinh học, thân thiện môi trường. Các thông số kích thước hạt và độ dày màng bọc được xác định bằng phương pháp phân tích hình ảnh trên phần mềm MATLAB. Quá trình giải phóng urê được đo bằng phương pháp phân tích quang phổ. Kết quả của nghiên cứu đã cho thấy cơ chế và mô hình giải phóng của SUF là mô hình khuếch tán màng. Các thông số quá trình như: áp suất thẩm thấu, hệ số khuếch tán của màng, thời gian trễ, thời gian ổn định và tỉ lệ giải phóng urê ổn định cũng được xác định. Đây là các thông số quan trọng để thiết lập mô hình giải phóng chất dinh dưỡng đảm bảo tương thích với nhu cầu của cây trồng. Chemistry ; Nuclear chemistry Magnesium Oxide Properties and Applications
Authors: Dan Xiong | Weisong Pan | Biao Luo | Chuwei Liu | Ting Zhou | Fang Wang | Yin-Hui Luo | Chuan Wu | Wai Chin Li | William Hartley | L. S. Prahlada Rao | Qiming Wang
Source: Research Square (preprint, 2021-02-11)
Field: Materials Science — Materials Chemistry

Development and Optimization of Rabbit Polyclonal Antibodies for Cu/ZnSOD detection in Rice (Oryza sativa L.) Abstract Superoxide dismutase (SOD) activity is an important measure of plant stress tolerance used in cultivar improvement. At present, we are unaware of any widely available immunological reagents for the detection of SOD in Oryza sativa (common Asian rice) or other plants. In this study, we used insilico B-cell epitope prediction tools to generate peptides which were immunized into rabbits to yield polyclonal antibodies against Cu/Zn SODs. Immunoblotting demonstrated that the antibody specifically recognized both native and denatured Cu/Zn SODs in rice. In addition, this antibody can confirm the expression tendency of endogenous OsCu/Zn SODs under heat stress by immunoblotting, and has a positive reaction in tomato leaf extracts, as well as human Hela cells. Chloroplast content of Cu/Zn SODs in rice can be identified by ELISA indirect competition method using this antibody. These results suggest that this Cu/Zn SOD rabbit polyclonal antibody may be a useful tool for elucidating the biological functions of Cu/Zn SODs in plants. Polyclonal antibodies ; Oryza sativa ; Rabbit (cipher) ; Antibody ; Molecular biology ; Chemistry ; Biology ; Mathematics ; Biochemistry ; Genetics ; Statistics ; Gene Nanoparticles: synthesis and applications ; Animal Genetics and Reproduction ; Advanced biosensing and bioanalysis techniques
Authors: Thomas E. Gartner | Kelly M. Hunter | Eleftherios Lambros | Alessandro Caruso | Marc Riera | Gregory R. Medders | Athanassios Z. Panagiotopoulos | Pablo G. Debenedetti | Francesco Paesani
Source: ChemRxiv (preprint, 2021-10-11)
Field: Materials Science — Materials Chemistry

The Anomalies and Local Structure of Liquid Water from Many-Body Molecular Dynamics Simulations For the last 50 years, researchers have sought molecular models that can accurately reproduce water’s microscopic structure and thermophysical properties across broad ranges of its complex phase diagram. Herein, molecular dynamics simulations with the many-body MB-pol model are performed to monitor the thermodynamic response functions and local structure of liquid water from the boiling point down to deeply supercooled temperatures at ambient pressure. The isothermal compressibility and isobaric heat capacity show maxima at ~223 K, in excellent agreement with recent experiments, and the liquid density exhibits a minimum at ~208 K. Furthermore, a local tetrahedral arrangement, where each water molecule accepts and donates two hydrogen bonds, is the most probable hydrogen-bonding topology at all temperatures. This work suggests that MB-pol may provide predictive capability for studies of liquid water’s physical properties across broad ranges of thermodynamic states. Molecular dynamics ; Supercooling ; Hydrogen bond ; Liquid water ; Heat capacity ; Phase diagram ; Thermodynamics ; Isobaric process ; Compressibility ; Water model ; Work (physics) ; Materials science ; Properties of water ; Isothermal process ; Molecule ; Chemical physics ; Chemistry ; Phase (matter) ; Physics ; Computational chemistry Material Dynamics and Properties ; Phase Equilibria and Thermodynamics ; Spectroscopy and Quantum Chemical Studies
Authors: Ke Wang | Yongqing Zhao | Weiju Jia | Silan Li | Chengliang Mao
Source: Metals (article, 2021-10-14)
Field: Materials Science — Materials Chemistry

The High-Temperature Deformation Behavior of As-Cast Ti90 Titanium Alloy Isothermal compressions of as-cast near-α Ti90 titanium alloy were carried out on a Gleeble-3800 simulator in the temperature range of 860–1040 °C and strain rates of 0.001–10 s−1. The deformation behavior of the alloy was characterized based on the analyses of flow curves, the constructions of Arrhenius constitutive equations and the processing map. The microstructure evolution of the alloy was analyzed using the optical microscopic (OM), transmission electron microscope (TEM), and electron backscatter diffraction (EBSD) techniques. The results show that the kinking and dynamic globularization of α lamellae is the dominant mechanism of flow softening in the α + β two-phase region, while the dynamic recovery (DRV) of β phase is the main softening mechanism in the β single-phase region. The dynamic globularization of α lamellae is mainly caused by the wedging of β phase into α laths and the shearing of α laths due to imposed shear strain. The activation of prismatic and pyramidal slip is found to be easier than that of basic slip during the deformation in the α + β two-phase region. In addition, the Schmid factor of equiaxial α is different from that of lamellar α, which also varies with the angle between its geometric orientation and compression direction (CD). Based on the processing map, the low η region within the temperature range of 860–918 °C with a strain rate range of 0.318–10 s−1 should be avoided to prevent the occurrence of deformation instability. Materials science ; Electron backscatter diffraction ; Shearing (physics) ; Strain rate ; Deformation (meteorology) ; Deformation mechanism ; Isothermal process ; Alloy ; Microstructure ; Titanium alloy ; Composite material ; Slip (aerodynamics) ; Lamellar structure ; Atmospheric temperature range ; Dynamic recrystallization ; Metallurgy ; Hot working ; Thermodynamics Titanium Alloys Microstructure and Properties ; Metallurgy and Material Forming ; Microstructure and mechanical properties
Authors: Amit Kumar | Shri Guest | Reddy Venugopal | David G. Dorrell | Ieee Fellow | S. B. Rahul Ratan Gopal | Fei Gao | Shri Gopal | ; Address | Shri | Rajkiran | Bilolikar | Dr | Kumar
Source: 2021 International Conference on Sustainable Energy and Future Electric Transportation (SEFET) (article, 2021-01-21)
Field: Materials Science — Materials Chemistry

SeFet 2021 TOC Electric and hybrid vehicle drives have come a long way in recent years. They are torque and power dense and often rely on fluid cooling to deliver high transient performance during acceleration and regenerative braking. Computer science Graphite, nuclear technology, radiation studies
Authors: Israel Alves Oliveira | Igo Souza | V. F. Rodriguez-Esqu
Source: Research Square (preprint, 2021-08-11)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Design of Hybrid Narrow-Band Plasmonic Absorber Based on Chalcogenide Phase Change Material in the Infrared Spectrum Abstract Structures absorbing electromagnetic waves in the infrared spectral region are important optical components in key areas such as biosensors, infrared images and thermal emitters, and require special attention from reconfigurable devices. We propose a three-dimensional metal-dielectric plasmonic absorber with a layer of PCM's (Phase Change Materials). The phase shift effects of PCMs are analyzed, and it is possible to obtain a displacement control in the resonant absorption peaks between the amorphous and crystalline states using the Lorentz-Lorenz relation. Aided in this empirical relation, we analyzed the absorption shift in the intermediate phases between them. The geometric parameters of the structure with the pcm material layer in the semi-crystalline state were optimized to present strong absorption for normal incidence. The effects of the oblique incidence for the TM and TE polarization modes were also analyzed. Our results demonstrate that PCMs have great potential for reconfigurable nanophotonic devices. Materials science ; Plasmon ; Chalcogenide ; Infrared ; Optoelectronics ; Dielectric ; Optics ; Nanophotonics ; Polarization (electrochemistry) ; Amorphous solid ; Absorption (acoustics) ; Physics Metamaterials and Metasurfaces Applications ; Phase-change materials and chalcogenides ; Liquid Crystal Research Advancements
Authors: Zahra Bagheri | Ali Motamedzadegan | Reza Khanbabaie | Ayoub Farhadi
Source: Food Science and Technology (article, 2021-07-27)
Field: Chemistry — Analytical Chemistry

Foam Mat Drying of Ricotta Cheese and Predicting its Characteristics with Artificial Neural Network Model Artificial neural networks are a set of nonlinear equations that have the ability to adapt to establish complex nonlinear relationships between input and output variables. Artificial neural network modeling was used to predict the production of Ricotta cheese powder with the desired quality. In this study, a 4-class artificial neural network with a multilayer perceptron model was used to predict foam and Ricotta cheese powder data prepared by foam mat drying. This modeling was performed by pattern recognition method and using machine learning algorithm. Pattern recognition is the ability to recognize the order of properties or data that gives information about a system or data set. The model used for this study had 10 neurons in the hidden layer. 4 different ratios of milk and whey (treatments) were considered as input and foam density, powder density, hygroscopy, water activity, water absorption and oil absorption as model outputs. In this model, 70% of the data were used for training, 15% for testing and 15% of the data for validation. The best validation performance occurred in the 20th period. The final results showed that the model used was able to accurately predict the data related to each class with 94.8% accuracy. Artificial neural network ; Artificial intelligence ; Computer science Spectroscopy and Chemometric Analyses ; Food Drying and Modeling ; Microencapsulation and Drying Processes
Authors: Andrea Ambrosini | Anthony H. McDaniel | Laura A. Achola | Matthew Witman | Margaret Gordon
Source:  (article, 2021-12-01)
Field: Materials Science — Materials Chemistry

Liquid Metal Alloys for Hybrid Thermo-Electro-Chemical Water Splitting Cycles. Abstract not provided. Materials science ; Metal ; Liquid metal ; Liquid water ; Water splitting ; Metallurgy ; Chemical engineering ; Thermodynamics ; Chemistry ; Engineering ; Physics Chemical and Physical Properties of Materials ; Ammonia Synthesis and Nitrogen Reduction ; Membrane-based Ion Separation Techniques
Authors: Mostafa G. Fadl | Zenat Kamel Mohamed
Source: Research Square (preprint, 2021-12-17)
Field: Chemistry — Inorganic Chemistry

Relationship Between Immobilization of Cells and Characterization of Binding Sites and of Cell-Free Bacteria and Immobilized Metal Biosorbents Abstract Cell immobilization is preferred. Immobilized cells have been traditionally used for the treatment of sewage. The techniques employed for immobilization of cells are almost the same as those used for immobilization of enzymes with appropriate modifications. Entrapment and surface attachment techniques are commonly used. Gels, and to some extent membranes, are employed. Certain microorganisms were found to amass metallic components at a high limit Was Known as Bacterial Biosorption, Potent metal biosorbents among microorganisms, at low pH esteems, cell divider ligands are protonated and contend essentially with metals for official. With expanding pH, more ligands, such as amino and carboxyl groups, could be exposed, leading to attraction between these negative charges and the metals and consequently incremental biosorption onto the cell surface. Starting with isolation and identification of heavy metal-resistant bacteria from rock ore. Studying Factors Affecting Uranium Biosorption, Optimization of bacterial growth conditions and optimum for metal uptake by free and immobilized bacterial cells. All this evidence suggest that functions groups Represented in our study are responsible for metal uptake in our bacterial biomass beside change in peaks position which assigned for its groups confirm biosorption of metal ions from waste due to ions charge interaction comparing with immobilized we found increase in no of binding sites indicate that immobilized bacterial have high efficiency for metal up take which also change in peaks position which assigned for its groups confirm biosorption of metal ions from waste due to ions charge interaction, Where the high biosorption yield obtained by bacteria. Biosorption ; Metal ; Metal ions in aqueous solution ; Chemistry ; Bacteria ; Bacterial cell structure ; Nuclear chemistry ; Surface charge ; Adsorption ; Organic chemistry ; Sorption ; Biology Radioactive element chemistry and processing ; Adsorption and biosorption for pollutant removal ; Chromium effects and bioremediation
Authors: Robert Colby | J.M. Falkowski | Gérardo Majano | Yogesh Joshi
Source: Microscopy and Microanalysis (article, 2021-07-30)
Field: Chemistry — Inorganic Chemistry

Understanding moisture-induced mesopore formation in metal organic framework Cu<sub>3</sub>(btc)<sub>2</sub> using three-dimensional FIB/SEM analysis Metal organic framework (MOF) copper benzene-1,3,5-tricarboxylate (Cu 3 (btc) 2 or HKUST-1) is one of the most broadly studied MOFs, considered for a diverse range of applications including gas storage and separation. Like many MOFs, HKUST-1 has a known sensitivity to water vapor, with performance in most applications degrading under ambient humidity. Prior work on the effect of moisture has focused on performance metrics or changes at the scale of the copper sites and the lattice. While it is generally appreciated that moisture leads to framework collapse, the consequences for the MOF microstructure remain largely unconsidered. Materials science ; Mesoporous material ; Water content ; Moisture ; Metal-organic framework ; Chemical engineering ; Nanotechnology ; Composite material ; Chemistry ; Geology ; Engineering ; Physical chemistry ; Organic chemistry Metal-Organic Frameworks: Synthesis and Applications ; Enhanced Oil Recovery Techniques ; Magnetism in coordination complexes
Authors: Abdelkhalek Oussama | Fatiha Elabadi | Noureddine Barka | F.Z. Mahjoubi | Fouzia Kzaiber
Source: Egyptian Journal of Chemistry (article, 2021-03-22)
Field: Chemistry — Analytical Chemistry

Classification of the geographical origin of argan kernels by infrared spectroscopy and chemometrics The main objective of this study is the use of Fourier transform mid-infrared (FTIR) spectroscopy for discrimination of samples of Argan kernels from three Moroccan regions. The content of Argan oil extracted from the kernel depends on the plant genotype and on the environmental conditions. The origin of argan kernel samples could be distinguished combining the IR spectra measurement and chemometric tools for discriminant analysis. A multivariate analysis procedure based on the combined use of Hierarchical Cluster Analysis (HCA) and Partial Least Squares-Discriminant Analysis (PLS-DA) was tested for this purpose. HCA showed three distinct clusters related to the Moroccan regions and suggested the usefulness of IR spectroscopy to distinguish among kernel origins. Afterwards, PLS-DA was used for the discrimination and classification of the origin of the various argan kernels and good classification models and validation results were obtained. For 9 new unknown samples we attribuate 100% these samples by external validation. The results demonstrated that the combined use of FTIR and chemometric analysis (cluster analysis and discrimination by PLS- DA) can be used to rapidly and simply determine the origine of argan kernels, a relevant task for the agroalimentary Moroccan industry. Chemometrics ; Infrared spectroscopy ; Spectroscopy ; Infrared ; Materials science ; Chemistry ; Chromatography ; Physics ; Optics ; Organic chemistry Spectroscopy and Chemometric Analyses ; Nuts composition and effects ; Phytochemicals and Antioxidant Activities
Authors: niloofar goodarzi | Sara Movahhed | Mohammad Javad Shakouri | Hossein Ahmadi Chenarbon
Source: Food Science and Technology (article, 2021-12-01)
Field: Chemistry — Analytical Chemistry

Feasibility of Visible/Near Infrared (Vis/NIR) Spectrophotometry capability in classification of lemon samples during storage period by PCA, LDA and SVM identification methods . Near-infrared spectroscopy ; Support vector machine ; Pattern recognition (psychology) ; Spectrophotometry ; Infrared Spectrophotometry ; Principal component analysis ; Artificial intelligence ; Chemistry ; Chromatography ; Computer science ; Optics ; Physics Spectroscopy and Chemometric Analyses ; Advanced Chemical Sensor Technologies ; Meat and Animal Product Quality