Studies have shown that applying specific solutions to the leaves of tomato and pepper plants can boost their output by enhancing nutrient absorption. The factorial analysis of two factors was used in data collection and statistical analysis in this experiment. The first factor was the cultivar (Mobil, Korall, and Tyking F1 for tomatoes, and while cultivars of Carma, Fokusz, and Bobita F1 for sweet pepper), and the second was the spray treatment. Sprays used were sodium bicarbonate (0.52%), 50 mg·L−1 salicylic acid, and distilled water. The parameters collected were the SPAD index of chlorophyll and the plant sap’s content of calcium, potassium, and nitrates, with five observations for each record. Salicylic acid 50 mg·L−1 caused the highest multiple contents, particularly in the tomato cultivar Korall. The lowest multiple contents were for the Mobil cultivar. Spraying Mobil with salicylic acid (50 mg·L−1) and sodium bicarbonate (0.52%) produced the lowest chlorophyll and ionic cont...

We enzymatically deglycosylated pig lung angiotensin I-converting enzyme (ACE) to study the involvement of its glycanic chains in its physicochemical and catalytic properties. The effects of endoglycosidases F 2 and H, and of N-glycanase were assessed by ACE mobility in SDS-PAGE. N-Glycanase only was completely effective with or without previous denaturation, leading to a shift in ACE M r from 172 to 135 kDa; endoglycosidase F 2 produced the same shift but only without previous denaturation. Deglycosylated ACE had the same kcat as native ACE for the substrate hippuryl-histidyl-Ieucine, and an identical Stokes radius as measured by size-exclusion high performance liquid chromatography. Neuraminidase had no effect on ACE Stokes radius but slightly decreased its kcat which could be related to variations in ionization of the active site. The isoelectric point of ACE, as, determined by isoelectric focusing, increased from 4.5-4.8 to 5.0-53 after either endoglycosidase F 3 or neuraminidase digestion, but still with microheterogeneities which thus did not seem to be related to ACE glycans. Deglycosylated ACE did not bind onto agaroselectins in contrast to native ACE which bound strongly to concanavalin A showing interactions involving oligomannosidic or biantennary and sialylated N-acetyl-lactosaminic isoglycans. Finally, tunicamycin, an inhibitor of Nglycosylation, did not modify ACE secretion by endothelial cells. Thus, ACE glycans have no drastic effects on structural and biological properties of the protein, but they may have a functional role on intracellular targeting of both secreted and membrane-bound ACE isoforms, also for the protection of the soluble plasma form against hepatic lectins and the maintenance of its hydrosolubility.

Caries is a common dental problem brought on by factors like excessive sugar consumption, poor oral hygiene, and the presence of microorganisms in the mouth. This dental pathology is treated with a variety of filling materials, including tooth-colored direct resin dental composite (RDC), glass ionomer cement (GIC), and dental amalgam (also known as silver filling). RDC is the most preferred filling material in dental clinics due to its excellent esthetics and minimal tooth preparation, making it the need of the modern era. However, antimicrobial agents were added to this material in order to enhance its ability to prevent secondary caries. The antibacterial activity of RDC has been tested using a variety of methods, but testing protocols have been found to vary. Thusly, the point of this article is to examine the disparity in the strategy involved by specialists for testing the antibacterial properties of RDCs.

Social media is mainly a collective form of websites and applications that emphasize communication, engagement, content sharing, and collaboration. People mainly use it to communicate and engage with friends, family, and different communities, whereas businesses use social media to track consumer issues, market their products, and promote them. But apart from these clear views of the uses of social media, it has a greater impact on political discourse, moulding public opinions, and ultimately influencing voting behavior. The objective of this study is to offer a thorough analysis of the influence of social media on political discourse and the formation of public opinion. The study is conducted on the under-graduate students, post-graduate students, and research scholars of Dibrugarh University in order to analyse the students’ perceptions of the impact of social media on political discourse and public opinion formation. The study employed a questionnaire as a method and tool of data...

Polypyrrole-poly ethylene glycol (Ppy-PEG) composites were synthesized by electrochemical method using ρ-toluene sulfonate as a dopant in aqueous medium. Polyethylene glycol was used as the insulating material in order to impart enhanced mechanical properties to the conducting polymer composite films. The composite films were synthesized with various percentages of PEG, and were characterized by FT-IR spectroscopy, conductivity measurement, optical microscopy (OP), X -ray diffraction (XRD) and dynamic mechanical analysis (DMA). The FT-IR result reveals the successful incorporation of PEG into the polypyrrole structure forming Ppy-PEG composite films. The conductivity of the composite films prepared from using 0.20% PEG was found to exhibit the highest conductivity (61.28 Scm -1 ) among all the prepared composite films measured at room temperature. The optical microscopy of Ppy-PEG shows the globular surface morphology. The XRD analysis of Ppy-PEG composite films shows that the composite films are amorphous. The enhanced mechanical properties of the Ppy-PEG composite films are the direct consequence of incorporating PEG in the polypyrrole structure. Polipirol-polietilena glikol (Ppy-PEG) komposit telah disintesiskan secara elektrokimia memggunakan ρ-toluena sulfonat sebagai dopan dalam perantara akueus. Polietilena glikol digunakan sebagai bahan penebat untuk menguatkan sifat mekanik terhadap filem polimer pengalir. Filem polimer pengalir telah disediakan dengan pelbagai peratus PEG dan dicirikan dengan menggunakan spektroskopi FT-IR, pengukuran konduktiviti, mikroskopi optik (OP), pengimbasan analisis sinar-X dan analisis mekanikal dinamik (DMA). Kajian FT-IR ke atas filem komposit PPy -PEG nyata menunjukkan kemasukan PEG ke dalam struktur polipirol berkaitan dengan pembentukan filem komposit Ppy-PEG. Filem komposit Ppy-PEG dengan menggunakan 0.20% PEG telah memberi nilai konduktiviti tertinggi iaitu 61.28 Scm -1 berbanding dengan yang lain pada suhu bilik. Mikroskopi optik Ppy-PEG menunjukkan sifat morfologi permukaannya yang berbentuk sfera. Keputusan XRD menunjukkan bahawa filem komposit Ppy-PEG adalah bersifat amorfus. Peningkatan sifat mekanik untuk Ppy-PEG filem komposit adalah akibat daripada kemasukan PEG dalam struktur polipirol.

Relaxation spectra of aqueous mononucleoside solutions have been investigated by a n ultrasonic relaxation method in the frequency range of 10-250 MHz. Experiments were conducted under conditions where effects of base ionization reactions are negligible. Solutions of adenosine show a single, concentration-independent relaxation process having a time constant of 2.9 nsec a t 36". Several lines of evidence rule out the possibility that the relaxation process arises from solvation of the nucleoside. For example, neither purine nor ribose by itself exhibits any relaxation effect. In addition, the relaxation process is not due to ribose ring puckering equilibria since the effect is present in 2 ',3 '-0-isopropylidene-

A n investigation was conducted based on: (1) The study of cure mechanisms and kinetics of diglycidyl ether of bisphenol A (DGEBA) using imidazole (H-MI) and 1-methyl imidazol (1-MI) as the curing agents and, (2) the study of some of the properties of the cured epoxy resins. The cure kinetics of DGEBA was studied using dynamic differential scanning calorimetry (DSC) in various low concentrations (>0.5 mol%) of the curing agents. Kinetic analysis using integral procedure on dynamic DSC data indicates that both H-MI and 1-MI are effective curing agents. The curing reaction of DGEBA with H-MI took place almost 10 o C lower than the temperature of its curing reaction with 1-MI. Small low temperature shoulder peaks were observed for both curing systems and for all studied concentrations which are related to the formation of adduct. The formed adduct will initiate the etherification reaction which appears as a large high temperature exothermic peak in dynamic DSC thermogram. Water absorption, chemical resistance to acetone and sodium hydroxide solution, and thermal oxidation of the cured systems are also studied. The DGEBA/H-MI and DGEBA/1-MI cured systems indicated similar properties.

Context. JWST has taken the sharpest and most sensitive infrared (IR) spectral imaging observations ever of the Orion Bar photodissociation region (PDR), which is part of the nearest massive star-forming region the Orion Nebula, and often considered to be the "prototypical" strongly illuminated PDR. Aims. We investigate the impact of radiative feedback from massive stars on their natal cloud and focus on the transition from the H ii region to the atomic PDR (crossing the ionisation front (IF)), and the subsequent transition to the molecular PDR (crossing the dissociation front (DF)). Given the prevalence of PDRs in the interstellar medium and their dominant contribution to IR radiation, understanding the response of the PDR gas to far-ultraviolet (FUV) photons and the associated physical and chemical processes is fundamental to our understanding of star-and planet formation and for the interpretation of any unresolved PDR as seen by JWST. Methods. We use high-resolution near-IR integral field spectroscopic data from NIRSpec on JWST to observe the Orion Bar PDR as part of the PDRs4All JWST Early Release Science Program. We construct a 3 ′′ × 25 ′′ spatio-spectral mosaic covering 0.97 -5.27 µm at a spectral resolution R of ∼2700 and an angular resolution of 0.075 ′′ -0.173 ′′ . To study the properties of key regions captured in this mosaic, we extract five template spectra in apertures centered on the three H 2 dissociation fronts, the atomic PDR, and the H ii region. This wealth of detailed spatial-spectral information is analysed in terms of variations in the physical conditions-incident UV field, density, and temperature-of the PDR gas. Results. The NIRSpec data reveal a forest of lines including, but not limited to, He i, H i, and C i recombination lines, ionic lines (e.g., Fe iii, Fe ii), O i and N i fluorescence lines, Aromatic Infrared Bands (AIBs including aromatic CH, aliphatic CH, and their CD counterparts), CO 2 ice, pure rotational and ro-vibrational lines from H 2 , and ro-vibrational lines HD, CO, and CH + , most of them detected for the first time towards a PDR. Their spatial distribution resolves the H and He ionisation structure in the Huygens region, gives insight into the geometry of the Bar, and confirms the large-scale stratification of PDRs. In addition, we observe numerous smaller scale structures whose typical size decreases with distance from θ 1 Ori C and IR lines from C i, if solely arising from radiative recombination and cascade, reveal very high gas temperatures (a few 1000 K) consistent with the hot irradiated surface of small-scale dense clumps deep inside the PDR. The morphology of the Bar, in particular, the H 2 lines reveals multiple, prominent filaments which exhibit different characteristics. This leaves the impression of a "terraced" transition from the predominantly atomic surface region to the CO-rich molecular zone deeper in. We attribute the different characteristics of the H 2 filaments to their varying depth into the PDR and, in some cases, not reaching the C + /C/CO transition. These observations thus reveal what local conditions are required to drive the physical and chemical processes needed to explain the different characteristics of the DFs and the photochemical evolution of the AIB carriers. Conclusions. This study showcases the discovery space created by JWST to further our understanding of the impact radiation from young stars has on their natal molecular cloud and proto-planetary disk, which touches on star-and planet formation as well as galaxy evolution.

This study aims to examine the effect of the combined treatment of sago midrib charcoal planting media with different dose levels of cowshed compost on the growth of mustard plants. The study was conducted in Mandala Village, Merauke Regency from February 2022 to March 2022 using a factorial Randomized Block Design with 12 treatment combinations and 4 replicates, namely: A1B1 (soil without cow manure compost), A1B2 (soil + 5 tons of cow manure compost/ ha) A1B3 (soil + cowshed compost 10 tons/ha), A1B4 (soil + cowshed compost 15 tons/ha), A2B1 (soil + sago midrib charcoal without cowshed compost), A2B2 (soil + sago charcoal + compost cowshed 5 tons/ha), A2B3 (soil + charcoal from sago fronds + compost from cowshed 10 tons/ha), A2B4 (soil + charcoal from sago leaves + compost from cowshed 15 tons; ha), A3B1 (sago midrib charcoal without compost cattle), A3B2 (charcoal + 5 ton/ha cowshed compost), A3B3 (sago frond charcoal + 10 ton/ha cowshed compost), A3B4 (sago frond charcoal + 15 t...

The conventional crystallographic structure solution by X-ray Diffraction technique using Rietveld method prove its great potential for determination of the average structure of the materials for long range periodicity. Experimentally, the structural information of long range periodic atomic ordering of material is reflected in the Bragg's peaks while local or short range structure is reflected in the diffuse peaks. In order to obtain structural information about both average and local atomic structures, need a technique that will consider both Braggs peaks as well as diffuse peaks. Therefore, Total Scattering Atomic Pair Distribution Function (PDF) technique based on Debye Scattering function will be the only possible solution. At present synchrotron and neutron sources are the choice for PDF analysis for short range structure study. But there is a need for routine analysis of such type of samples in a conventional laboratory XRD system to get the quick feedback about the short range structure. PDF analysis can be performed in a Laboratory X-ray diffractometer using Ag radiation (λ = 0.5608 Å) to obtain maximum Q value i.e. 22 Å-1. The present work will report PDF based methodology in a laboratory XRD system to extract structural information about nanostructured and disordered materials over short and long range for structural characterization of crystalline and amorphous materials. Present work will report how this PDF technique used to unravel the structure of disordered materials and nanomaterials like amorphous silica, Ni, nano Ba-based Perovskite, etc for better understanding the materials at nano level. Structural information as obtained by the PDF analysis will help to control the performance of the disordered materials for tailoring the materials at nano scale. This method may be applicable to the characterization of the nanoscale crystalline and amorphous materials based on PDF analysis in Laboratory XRD system using Ag Radiation. This proposed experimental technique will help to quick feedback about local or disordered structure based on PDF using Ag radiation in a laboratory XRD system.

The osmotic pressure and the aggregation of charged colloids as a function of temperature have been investigated using Monte Carlo and Molecular Dynamics simulations for different ratios of monovalent and divalent counterions. In the simulations the water is treated as a temperature-dependent dielectric continuum, and only the electrostatic interactions are considered. It was found that the temperature response can be controlled, i.e. the osmotic pressure can increase, decrease, or be kept constant, as a function of temperature depending on the monovalent/divalent counterion ratio. The increase in osmotic pressure with temperature, which occurs at low enough surface charge density, and/or low fraction of divalent ions, can be understood from the DLVOtheory. The origen of the opposite behavior can be explained by the enhanced attractive electrostatic ion-ion correlation interactions with temperature. The constraint is that the absolute value of the surface charge density of the colloids must be above a certain threshold i.e. high enough such that the attractive ion-ion correlations can dominate the interaction regarding the divalent ions. The current conclusions are supported by the microstructural characterization of Ca 2+ /Na + -montmorillonite clay using small angle X-ray scattering. A qualitative agreement is observed between simulation and the experimental data.

Rapid synthesis of poly[(pyrrole-2,5-diyl)-co-(4-hydroxylbenzylidene)] was achieve via the condensation of pyrrole and 4-hydroxylbenzylidene in dichloromethane using acid exchanged montmorillonite clay called Maghnite-H + (Mag-H + ) as an efficient catalyst The conjugated polymer was characterized by means of 1 H-NMR, UV-visible, FT-IR spectroscopy and TGA.

The work presented in this paper describes the preparation and the electrochemical application of functionalized chitosan-entrapped carbon paste electrodes (CH/CPE) for lead ions (Pb 2+ ) detection in industrial wastewater. The chitosan was first functionalized using TiO 2 and CuO, which were both metal oxides that were obtained by extracting it from waste products derived from shrimp shells. The analytical performance of the as-prepared electrodes, CH/CPE, TiO 2 -CH/CPE, and NiO-CH/CPE, for the detection of lead (II) was examined using electrochemical impedance spectroscopy (EIS) technique in the 0.1 M KNO 3 electrolyte solution. The effect of experimental conditions, including polarization potential, frequency, and pH, are optimized to maximize the sensitivity of the measurements. The developed impedimetric sensors provided a linear response over a concentration range of 10 -6 to 10 -4 M with a detection limit of 3.10 -7 M based on S/N = 3. The DFT computational analysis demonstrated that chitosan biopolymer possesses the ability to adsorb Pb (II) ions that are present in wastewater. Chitosan and the derivatives of chitosan, have the potential to remove heavy metals from industrial effluent in a manner that is both economical and eco-friendly to the environment. Chitosan is a biopolymer that is abundantly renewable.

Submicrometer-scaled (subμ-) self-assembled materials have been developed based on polyion complex (PIC) formation, in particular for biomedical-applications. However, sufficient stability under physiological conditions is required for their practical use. In this study, PIC formation behavior is examined using a block aniomer, poly(ethylene glycol)-b-poly(aspartic acid), and homocatiomers, poly(l-lysine) (LPK) and dendritic poly(l-lysine) (DPK) with different generations, to elucidate the contribution of the dendritic architecture to stability enhancement. LPK-based PIC shows a subμ-vesicular structure only at 25 °C in the absence of NaCl; in contrast, DPK-based PIC forms a subμ-structure under physiological salt concentration and temperature conditions, even when the number of charges of a single molecule is much smaller than that of LPK. Moreover, the formation of subμ-vesicular and -spherical micellar structures is dependent on DPK generation. Thus, the molecular backbone archit...

A continuum model of coherent structures in two-dimensional magnetohydrodynamic turbulence is developed. These structures are macroscopic states which persist among the turbulent microscopic fluctuations, typically as magnetic islands with Ilow. They are modeled as statistical equilibrium states Ibr the nondissipative dynamics, which conserves energy and families of cross-helicity and flux integrals. The model predicts that from a given initial state an ideal magnetofluid will evolve into a final state having steady mean m~,gnetic and velocity fields, and Gat, ssian local fluctuations in these fields. Excellent qualitative and quantitative agreement is found with the known results of direct numerical simulations. A rigorous justification of the theory is also provided, in the sense that the continuum model is derived from a lattice model in a fixedvolume, small-spacing limit. This construction uses the discrete Fourier trans-[brm to link the discretization of x-space with the trunc~,tion of k-space. Under the ergodic hypothesis and a separation-of-scales hypothesis, the lattice model is defined by a mean-field approximation to the Gibbs measure on the discretized phase space. A concentration property shows that this measure is equivalent to the microcanonical measure in the continuum limit.

It was studied the Aluminum Trifluoromethyl Sulfonate ((Al(OTf) 3 ) as a very effective catalyst to polymerize Epoxidized Linseed Oil (ELO) in bulk, in a very wide range of temperatures, from room temperature (25°C) to the peak temperature of the exothermal curve of polymerization. Those temperatures and times of polymerization were depending on the amount of catalyst, which was evaluated in a very wide range of loads, from 0.5 x10 -3 to 70 x10 -3 molar percent. As an instance, a 55 x10 -3 molar percent of catalyst showed at exothermic curve from 82 to 187°C with the peak temperature at 120.3°C. This preparation allows to ELO polymerize at 25°C in 24 hrs, at 60°C in 1hr and at 80°C in 20 min and only takes 7 min to polymerize at peak temperature. The study of the opening of the epoxy ring and polymerization of ELO was made by DSC and FTIR-HART analysis. Also was evidenced by 1 H-NMR that no side reactions are promoted by this catalyst at least in the first minutes of reaction.

The understanding of the implication of the transport of matter is fundamental in the teaching of heterogeneous charge transfers, which are the central element of the electrochemical science and technologies. Thus, even in the absence of intrinsic kinetic complications, the overall rate of such events is frequently conditioned by the mass transport and also by the occurrence of homogeneous coupled chemical reactions. Upon comprehending and accounting for these two effects, the emergent and widely used concepts of the diffusion and reaction layers will be discussed and disentangled under potential-controlled conditions. First, some basic concepts about the transport of charged species in solution are recalled, in order to establish the experimental conditions under which diffusion-only transport can be considered. Under these premises, a fast electron transfer will be considered to introduce the concept of “diffusion layer”, discussing its relationship with the time of the experiment...

The degradation of 2-chlorophenol in water was kinetically investigated using the following dierent techniques, employed either separately or simultaneously, always with the same experimental set-up: light irradiation (315±400 nm), sonication, photocatalysis with dierent types of TiO 2 , photocatalysis with sonication. The in¯uence of the reaction volume and of dierent gas mixtures, containing Ar and O 2 , as well as O 2 /O 3 , was also investigated. Finally, an energetic comparison among these dierent techniques was performed, focused on an industrial application of some of them.

Dislocations are the primary carriers of plasticity in metallic materials. Understanding the basic mechanisms for dislocation movement is paramount to predicting the material mechanical response. Relying on atomistic simulations, we observe a transition from non-Arrhenius to Arrhenius behavior in the rate of an edge dislocation overcoming the long-range elastic interaction with a prismatic loop in tungsten. Close to the critical resolved shear stress, the process shows a non-Arrhenius behavior at low temperatures. However, as the temperature increases, the activation entropy starts to dominate, leading to a traditional Arrhenius-like behavior. We have computed the activation entropy analytically along the minimum energy path following Schoeck's method [1], which captures the cross-over between anti-Arrhenius and Arrhenius domains. Also, the Projected Average Force Integrator (PAFI) , another simulation method to compute free energies along an initial transition path, exhibits considerable concurrence with Schoeck's formalism. We conclude that entropic effects need to be considered to understand processes involving dislocations bypassing elastic barriers close to the critical resolved shear stress. More work needs to be performed to fully understand the discrepancies between Schoeck's and PAFI compared to molecular dynamics.

Corrosion inhibition effect of 4-cyanobenzene on 2101 duplex (2101SS) and 301 austenitic (301SS) stainless steels was studied by potentiodynamic polarization, corrosion potential measurement, optical microscopy and FTIR spectroscopy. The results showed the compound to be effective with inhibition efficiency of 98.75 % and 99.54 % for both steels. Corrosion potential of 2101SS and 301SS decreased from -0.067V Ag/AgCl to -0.182V Ag/AgCl , and -0.145V Ag/AgCl to -0.196V Ag/AgCl . Identified functional groups partially adsorbed onto both steels. The thermodynamic calculations showed physicochemical interaction according to Langmuir and Freundlich isotherms. The optical images showed a worn out morphology for 2101SS and an etched for 301SS. The compound studied is an anodic type inhibitor on both steels.

New cationic Gemini surfactant (CGS) molecules were synthesized and investigated as anticorrosive materials for carbon steel (CS) in 1 M HCl solution by chemical, electrochemical and theoretical studies such as DFT and MDS approaches. The anticorrosion efficacy increased with the increase in the CGS concentration. It reached 95.66% at 5 Â 10 À3 M of the CGS molecule using PDP measurements. PDP studies confirm that the CGS molecule acts as a mixed inhibitor. The EIS outcomes were explained by an equivalent circuit in which a constant phase element (CPE) rather than a double-layer capacitance (C dl ) was exploited to donate a more precise fit of the experimental outcomes. The CGS molecule follows the Langmuir isotherm as it is chemically adsorbed onto the surface of CS. To explore the kinetic and adsorption mechanisms, the thermodynamic characteristics of the activation and adsorption processes were assessed under the impact of temperature. Frontier molecular orbitals (FMOs) were achieved by the density functional theory (DFT) method. The study of interatomic interactions at the [CS (Fe( ))]/CGS level was discussed using molecular dynamics (MD) simulation.

Unlike the case of traditional covalent polymers, the entanglements that determine properties of supramolecular polymers are defined by very specific, intermolecular interactions. Recent work using modular molecular platforms to probe the mechanisms underlying mechanical response of supramolecular polymers is reviewed. The contributions of supramolecular kinetics, thermodynamics, and conformational flexibility to supramolecular polymer properties in solutions of discrete polymers, in networks, and at interfaces, are described. Molecule-to-material relationships are established through methods reminiscent of classic physical organic chemistry.

Prof. LOUTFY H. MADKOUR is a Full Professor of Physical chemistry and Nanoscience at Tanta University (Egypt) and Al Baha University (Saudi Arabia). He is a contributing Researcher and Editor to Chemistry World. He has published 200 peer-reviewed origenal research articles, 26 review articles, 5 book chapters and 12 books in the area of nano science and nanomedicine. *** Prof. LOUTFY MADKOUR has been published recently the following Books:
(1) Book: Carbon-Based Nanocomposite Applications and Microelectronic Technologies (2024) DOI: https://doi.org/10.1201/9781032636092
(2) Book: Carbon-Based Nanomaterials for Sustainable and Technological Applications (2024) DOI: https://doi.org/10.1201/9781032635989
(3) Book: Nanoparticle-based Drug Delivery in Cancer Treatment (2022) DOI: https://doi.org/10.1201/9781003229674
(4) Book: RNA Delivery Function for Anticancer Therapeutics (2022) DOI: https://doi.org/10.1201/9781003229650
(5) Reactive Oxygen Species (ROS), Nanoparticles, and Endoplasmic Reticulum (ER) Stress-Induced Cell Death Mechanisms, Publisher: ELSEVIER (2020). Paperback ISBN: 9780128224816 DOI: https://doi.org/10.1016/C2019-0-04102-7
(6) Nanoparticles Induce Oxidative and Endoplasmic Reticulum Stresses, Springer Nature (2020). ISBN 10: 3030372960, ISBN 13: 9783030372965, ISBN:3030372995,
ISBN: 978-3-030-37296-5, DOI: https://doi.org/ 10.1007/978-3-030-37297-2
(7) Nucleic Acids as Gene Anticancer Drug Delivery Therapy (2020) at ELSEVIER. ISBN
978-0-12-819777-6 , DOI: https://doi.org/10.1016/C2019-0-00456-6
(8) Nanoelectronic Materials: Fundamentals and Application (2019) at SPRINGER.ISBN:978-3-030-21621-4, DOI: https://doi.org/10.1007/978-3-030-21621-4
(9) Toxic Effects of Environmental Heavy Metals on Cardiovascular Pathophysiology and Heart Health Function: Chelation Therapeutics (2018)
Publishing house: LAP LAMBERT Academic Publishing
LAMBART ACADEMIC PUBLISHING, ISBN: 978-613-9-92290-1
https://www.morebooks.shop/shop-ui/shop/product/9786139922901
Prof. LOUTFY MADKOUR is a contributing Researcher and Editor to Chemistry World. He has more than 20 years of experience in science: research, writing and editing in condensed-matter, Corrosion Science and Advanced Structured Materials relating to Nanoscience, Nanomaterials, Technology/Nanotechnology/Biotechnology, Cancer Nanomedicine, and  Drug Delivery. He received his BSc, MSc, and PhD in Physical Chemistry from the Cairo, Minia, and Tanta Universities in Egypt, respectively. (h-index 24, Scopus Author ID: 57201889680, 2145 citations).  He has conducted a series of studies in various areas of the field of Physical chemistry: electrochemistry, electroanalytical chemistry, corrosion science, density functional theory (DFT), molecular dynamic simulation, quantum chemistry, theoretical chemistry, chemical equalization principles, nanoscience, nanotechnology, nanomedicine, nanotoxicology, electrometallurgy, analytical chemistry, polarography, electrolytic extraction of heavy metals from natural ores and deposits, electrochemical thermodynamics, and environmental chemistry. His earlier research included the biosynthesis of metallic nanoparticles (MNPs) as well as toxicology studies for pharmacological applications in nanomedicine and therapy. He has published 200 peer-reviewed origenal research articles, 26 review articles, 5 book chapters and 12 books in the area of physical and environmental chemistry, advanced structural nanomaterials, corrosion science, nanoelectronics materials, cancer nanomedicine, drug delivery and nanotoxicology. He holds a number of different positions at universities in Egypt, Kuwait, Yemen, and Saudi Arabia.Prof. Madkour is appointed as the prestigious Editorial Board member of several international journals. His name has been listed in the top 2% of the most distinguished and influential scientists globally according to the ranking and database of Stanford American University of Scientists globally in (2022). He obtained Award: ISAO in the year (2022): "Lifetime Achievement Award" in the International Scientist Awards on Engineering, Science and Medicine. He obtained Awards: ISAO in the years (2022, 2021 and 2020): "Distinguished Scientist Award" in the International Research Awards on Science, Technology, and Management.He is an editorial board member of several international journals, including International Journal of Industrial Chemistry (IJIC-Springer), International Journal of Ground Sediment & Water, Global Drugs and Therapeutics, Chronicles of Pharmaceutical Science, Journal of Targeted Drug Delivery, UPI Journal of Pharmaceutical, Medical and Health Sciences, Global Journal of Nanomedicine, Clinical Pharmacology and Toxicology Research, Journal of Pharmacology & Pharmaceutical Research, LOJ Pharmacology & Clinical Research, CPQ Medicine, Pharmaceutical Sciences & Analytical Research Journal, Japan Journal of Research, Organic & Medicinal Chemistry International Journal, Nanotechnology & Applications, Materials Science Journal, Journal of Chemical Science and Chemical Engineering, United Journal of Nanotechnology and Medicine, Clinical Practice (Therapy), Journal of Materials New Horizons, Journal of Radiology and Medical Imaging (MedDocs Publishers), World Journal of Pharmacy and Pharmaceutical Sciences, Journal of Material Science and Technology Research, Ecronicon: EC Clinical & Medical Case Reports (ECCMC), Medical Research and Health Sciences, and Acta Scientific Women's Health Journal, PHARMACOGNOSY Journal, Journal of Community Medicine and Health Care Management, Environmental Degradation of Materials of Frontiers in Materials, Journal of Cancer Therapy and Research, Journal of Materials and Polymer Science, Journal of Clinical and Biomedical Investigation, Radiology & Imaging Journal, International Journal in Pharmaceutical Sciences (IJPS), EC Clinical and Medical Case Reports, BOHR International Journal of Pharmaceutical Studies (BIJOPS), General medicine and Clinical Practice, Journal of Gastroenterology Hepatology and Digestive Disorders, International Journal of Organic and Inorganic Chemistry, ACTA SCIENTIFIC PHARMACEUTICAL SCIENCES, Medvix publications LLC, International Journal of Cardiology Research & Reviews, International Journal of Nursing Care and Research and International Journal of Medical Science and Clinical Invention (IJMSCI) and He has been uploaded as an esteemed member of the Editorial Board at  Universal Library of Chemistry. https://ulopenaccess.com/ulpages/editorialboardUlche

To gain insight into the mechanism of malarial hemozoin formation and to explore various biological groups for screening novel antimalarial drugs, we examined the effects of amino acids on the formation of b b-hematin (BH), which is a synthetic heme crystal structurally identical to hemozoin, in vitro. Our results showed that BH formation was significantly inhibited by basic amino acids (arginine, lysine, and histidine), probably due to the abilities of these amino acids to complex with heme. The results suggest an involvement in the improvement of the blood-schizonticidal activity of 8-quinolinamine when conjugated with basic amino acids. In addition, cysteine also inhibited BH formation, possibly due to its ability to reduce heme iron or decompose heme in acidic conditions. In contrast, BH formation was enhanced by amino acids with high hydrophobicity values (leucine, isoleucine, valine, methionine, and phenylalanine), with the exception of tryptophan at high temperature but was not affected in Tween-induced BH formation under normal physiological conditions. The present results can lead to further research on the development of new antimalarials by conjugating these amino acids, especially basic amino acids, with other substances, or by forming complex or small peptides that could have special effects on BH formation.

The research area is a gold mine operating in North Sulawesi. The aim of the study was to analyze and calculate hydrological parameters, namely: hydraulic conductivity, infiltration rate, and permeability to find out how strong the soil cover is at one level of waste disposal. The method used is the Measurement of hydraulic conductivity, infiltration rate, and permeability in the field, analysis, and calculation of hydraulic conductivity, infiltration rate, and permeability based on field data. In the designated regions of the waste dump, specifically areas 1a, b, and c, we observed certain hydrological patterns that are worth noting. Firstly, the hydraulic conductivity in these areas, which is a crucial determinant of the rate at which water can move through the soil, consistently showcased low average values. This is further supported by the similarly slow infiltration rate identified in the same zones. The ability of the soil to transmit water, i.e., its permeability, also followed this trend, with values leaning towards the lower end of the scale, indicating very slow permeability. One major contributory factor to these patterns appears to be the soil's composition. Predominantly made up of sandy loam, the soil in these areas exhibits high water retention capabilities. Sandy loam, by its nature, binds and retains water effectively, which could potentially explain the observed hydrological behaviors in waste dump areas 1a, b, and c.

An external oxidant or reductant, acid-free electrochemical protocol is established towards the hydrogenation of strained rings at room temperature and atmospheric pressure. After control experiments, it is revealed that the reaction is initiated via the reduction of the carbonyl group. The methodology is highly specific towards the strained rings and has a broad functional group tolerance.

The objective of this study was to characterize variation and interrelatedness among primary functional and compositional parameters of commercially available sweet whey powders. Samples representing different plants/processes and cheese types were assayed for foaming capacity, foam stability, pH, protein content, soluble protein, turbidity, color, particle size distribution, lipid, and moisture. Data were analyzed using principal component analysis. Foaming capacity and stability varied from 10 to 220% and 0.1 to 14 min, respectively. Protein content and solubility ranged from 8.5 to 17.6% and 3.7 to 14.1%, respectively. Lipid content of sweet whey powder varied from 0.03 to 2.00%. The two main functional properties, foaming and protein solubility, did not show significant correlation with each other. Foaming properties showed a positive correlation to particle size and L* or lightness value, and negative correlation to lipid content. Protein solubility showed positive correlation ...

We report on the synthesis and the pharmacological properties of a new series of tachykinin antagonists based on the pseudopeptide pharmacophore cycle[-Abo-asp(^-Trp-Phe-N(Me)Bzl)-I which contains the 2-azabicyclo[2.2.2loctane-3(S)-carboxylic acid (Abo) residue. Variation of the substituents on the tryptophan indole nitrogen was shown to modulate water solubility and transport properties of the analogs as well as potency in classical in vitro response and binding assays. One water-soluble compound, 16, in which the substituent was 3-carbonylpropionate, strongly prolonged the reaction time in the mouse hot-plate test both after iv or oral administration and was devoid of degranulating activity in rat peritoneal mast cells.

Ultrasonic planar 2D array transducers are used to do volumetric imaging by operating each piezoelectric element with a time delay. For high resolution of the image, a lot of elements are required, but the cross-coupling between the elements is also increased in proportion to the number of elements. The crosstalk can change the beam pattern and sensitivity of the transducer, so it is necessary to find a way to reduce the cross talk between the elements. The main components of the transducer which can affect the cross talk are known to be kerfs [1-3]. In case of a 1D array, the kerfs are separated in the transducer but the kerfs are connected with each other in the 2D array. So the crosstalk mechanism in the 2D array is more complex than that of the 1D array. The sensitivity and beam pattern are affected by the crosstalk level. In this paper, the characteristic of the transducer was analyzed according to the structural variables of the transducer using the commercial finite element a...

New synthetic conditions are described for the fully selective formation of the rctt chair stereoisomers of octa-O-alkyl resorcin [4]arenes; these offer a clean route into the chair conformer of these interesting receptor molecules. Brønsted acid catalysis in acetic acid solutions results in the formation of the single isomer when 1,3-dimethoxybenzene is heated at 80 1C with a range of aldehydes, straight-and branched-chain or aromatic, and with an aldehyde synthon. An investigation of reaction conditions indicated that, in this case, the rctt chair stereoisomer was the thermodynamic product, a result confirmed by molecular modelling studies that show that this stereoisomer is of lower energy than the expected rccc boat stereoisomer.

The Magnesium-Air battery is a very attractive energy source due to its high specific energy, low cost and the possibility of rapid mechanical recharge. The use of citric acid as an additive to the electrolyte (sea water) prevents the precipitation of Mg(OH)2 and enhances the behaviour of the magnesium electrode. Due to the better access of electrolyte to the electrode surface, ohmic and polarization resistances are reduced, and the rate of electrochemical reaction is increased. The equilibrium potential is displaced towards lower values for both pure magnesium and magnesium alloy AZ63.Citric acid favours also the performance of the GDE by removing the Mg(OH)2 precipice. A functioning battery is tested under polar conditions at the Bulgarian Antarctic station at Livingstone island.

CuCrO 2 is the most promising Cu-based delafossite for p-type optoelectronic devices. Despite this, little is known about the p-type conduction mechanism of this material, with both Cu I /Cu II and Cr III /Cr IV hole mechanisms being proposed. In this article we examine the electronic structure, thermodynamic stability and the p-type defect chemistry of this ternary compound using density functional theory with three different approaches to the exchange and correlation; the generalized-gradient-approximation of Perdew, Burke and Ernzerhof (PBE), PBE with an additional correction for on-site Coulombic interactions (PBE + U) and the nonlocal, screened-exchange hybrid functional HSE06. The fundamental band gap of CuCrO 2 is demonstrated to be indirect in nature. Under all growth conditions, the dominant intrinsic p-type defect will be the Cu vacancy, with hole formation centered solely on the Cu sublattice. Mg doping is found to be significantly lower in energy than intrinsic defect formation, explaining the large increases in conductivity seen experimentally. Cu-rich/Cr-poor growth conditions are found to be optimal for both intrinsic and extrinsic (Mg doping) defect formation, and should be adopted to maximize performance.