Manipulation Strategies Research Articles

The β-catenin C terminus links Wnt and sphingosine-1-phosphate signaling pathways to promote vascular remodeling and atherosclerosis.

Canonical Wnt and sphingosine-1-phosphate (S1P) signaling pathways are highly conserved systems that contribute to normal vertebrate development, with key consequences for immune, nervous, and cardiovascular system function; despite these functional overlaps, little is known about Wnt/β-catenin-S1P cross-talk. In the vascular system, both Wnt/β-catenin and S1P signals affect vessel maturation, stability, and barrier function, but information regarding their potential coordination is scant. We report an instance of functional interaction between the two pathways, including evidence that S1P receptor 1 (S1PR1) is a transcriptional target of β-catenin. By studying vascular smooth muscle cells and arterial injury response, we find a specific requirement for the β-catenin carboxyl terminus, which acts to induce S1PR1, and show that this interaction is essential for vascular remodeling. We also report that pharmacological inhibition of the β-catenin carboxyl terminus reduces S1PR1 expression, neointima formation, and atherosclerosis. These findings provide mechanistic understanding of how Wnt/β-catenin and S1P systems collaborate during vascular remodeling and inform strategies for therapeutic manipulation.

When to Talk and When to Keep It to yourself? Strategies for Legitimating Managerial Intuitions in An Organisational Context

The purpose of this study is to explore the strategies deployed by managers in organisations to legitimate their intuitions. Managerial practice is a continual process of emergence and integration of problems and projects, and by which managers navigate a complex world. To do so, they rely partly on their intuitions, whose effectiveness has largely been demonstrated in the literature. However, the rational model is still considered the optimal cognition and decision-making process in organisations. The persistence of the myth of rationality compels managers to deploy strategies to legitimate their intuitions. But these strategies are poorly understood. The aim of this study therefore was to describe them. For this purpose, we collected 191 accounts of episodes where managers legitimated their intuitions. Our analysis of these accounts revealed seven intuition legitimation strategies. Some of these strategies had not previously been identified in the institutional literature (personalisation, transparency, exploration and compound strategy). For others which had already been partly described (rationalisation, manipulation and relational strategy), we show that managers deploy new modes. These results contribute to the knowledge of legitimation strategies from a conceptual point of view. They also shed some light on the mistrust of intuition that still prevails in organisations, despite its importance.

When to Talk and When to Keep It to yourself? Strategies for Legitimating Managerial Intuitions in An Organisational Context

The purpose of this study is to explore the strategies deployed by managers in organisations to legitimate their intuitions. Managerial practice is a continual process of emergence and integration of problems and projects, and by which managers navigate a complex world. To do so, they rely partly on their intuitions, whose effectiveness has largely been demonstrated in the literature. However, the rational model is still considered the optimal cognition and decision-making process in organisations. The persistence of the myth of rationality compels managers to deploy strategies to legitimate their intuitions. But these strategies are poorly understood. The aim of this study therefore was to describe them. For this purpose, we collected 191 accounts of episodes where managers legitimated their intuitions. Our analysis of these accounts revealed seven intuition legitimation strategies. Some of these strategies had not previously been identified in the institutional literature (personalisation, transparency, exploration and compound strategy). For others which had already been partly described (rationalisation, manipulation and relational strategy), we show that managers deploy new modes. These results contribute to the knowledge of legitimation strategies from a conceptual point of view. They also shed some light on the mistrust of intuition that still prevails in organisations, despite its importance.

Manipulating interfacial bond for controlling load transfer in 3D printed fiber reinforced polymer composites

The fiber/matrix interface is a critical item that affects Fiber Reinforced Polymer (FRP) composites mechanical performance due to its control of the load transfer mechanism. Partially bonded interfaces have been shown to affect the failure mode of FRP composites. This article examines the significance of manipulating the fiber/matrix interfacial bond in 3D printed FRP composites on the mechanical performance of multilayer 3D printed FRP composites. Three designs are investigated with different fiber stacking sequences, fiber orientation, and interfacial bond configurations. The designs have a low coefficient of variation in load fractions between layers to enable a gradual load transfer and progressive failure. Utilizing 3D printer chamber temperature changes, a composite with a controlled bond configuration is achieved using thermal blocks. It was observed that the controlled bond configurations resulted in promoting progressive failure and increased the strain at failure of 3D printed FRP composites. The observations of direct tension tests were supported with interlayer shear strength and interfacial adhesion tests which explained the weakened load transfer in the thermal block configurations. Using the interface manipulation strategy with thermal blocks in 3D printed specimens, a 25% lower interlayer shear strength and a 65% lower interfacial adhesion was achieved compared with un-modified interfaces. These changes attribute to the altered load transfer mechanism in 3D printed glass fiber reinforced composites and high strain to failure of up to 5% using high strength high stiffness fiber orientations. This work does not incorporate any new materials into the thermoplastic-fiber 3D printed structure which has been the strategy of past work to modify mechanical performance. Alternatively, a unique approach by using chamber and print bed temperature characteristics to modify the interfacial bond has been adopted that has shown to promote progressive failures and improve ductility in FRP composites. This study furthers the development of ductile designs in FRP composites with 3D printing technology in aerospace, wind, infrastructure, and automobile applications.

Ant identity determines the fungi richness and composition of a myrmecochorous seed.

Myrmecochory-seed dispersal by ants-is a mutualistic interaction in which ants attracted by seed appendices take them away from the parental plant location, where seeds usually have better development odds. Not all ant species benefit plants, and the mechanisms of those divergent outcomes are still unclear, especially from the perspective of microbial third parties. Here, we explore the effects of seed manipulation on fungi communities promoted by two ant species with contrasting effects on seed germination and antimicrobial cleaning strategies. We hypothesize that: i) fungi richness is higher in seeds manipulated by Acromyrmex subterraneus (species that negatively affect seed germination), followed by unmanipulated seeds and seeds manipulated by Atta sexdens (ant species that increase seed germination) and ii) seeds manipulated by A. sexdens, Ac. subterraneus and unmanipulated seeds present dissimilar fungi compositions. We identified fungal morphotypes in three groups of seeds: i) manipulated by A. sexdens; ii) manipulated by Ac. subterraneus; iii) unmanipulated. Seeds manipulated by Ac. subterraneus exhibited higher fungal richness than those manipulated by A. sexdens and unmanipulated seeds, indicating that the ant species known to impair germination increases the fungal load on seeds. Additionally, we found that A. sexdens ants were unable to reduce fungal richness compared to unmanipulated seeds. Furthermore, fungal composition differed among all three treatments. Our results underscore the significance of ant species identity in shaping the fungal communities associated with myrmecochorous seeds. Given the potential influence of microbial infection on seed fate, we suggest considering manipulation strategies when evaluating the overall quality of an ant as a seed disperser.

Embodied interaction with face masks and social distancing

Abstract In this article, we ask how interlocutors proceed with their daily activities in the first months of the Covid-19 pandemic when faced with new ways of communication due to social distancing and the use of face masks. We carried out a fine-grained analysis of different micropractices from daily work in a healthcare center in Brazil and built our analysis on multimodal conversation analysis (MCA), interactional linguistics (IC), as well as gesture studies (GS). The analysis revealed that particularly the following recurrent patterns seem to be characteristic for communication during the pandemic in the given microcontexts: (a) a high use of deictic gestures, (b) an intensification of prosodic means, (c) verbal strategies such as reformulation and repetition, (d) the integration of object manipulation and (e) mitigation strategies in case of new formats that imply intrusion such as controls at travel checkpoints.

Extracellular vesicles derived from Lactobacillus johnsonii promote gut barrier homeostasis by enhancing M2 macrophage polarization

IntroductionDiarrheic disease is a common intestinal health problem worldwide, causing great suffering to humans and animals. Precise manipulation strategies based on probiotics to combat diarrheic diseases have not been fully developed. ObjectivesThe aim of this study was to investigate the molecular mechanisms by which probiotics manipulate macrophage against diarrheic disease. MethodsMetagenome reveals gut microbiome profiles of healthy and diarrheic piglets. Fecal microbial transplantation (FMT) was employed to explore the causal relationship between gut microbes and diarrhea. The protective role of probiotics and their derived extracellular vesicles (EVs) was investigated in ETEC K88-infected mice. Macrophage depletion was performed to assess the role of macrophages in EVs against diarrhea. Execution of in vitro cell co-culture and transcriptome analyses elucidated the molecular mechanisms by which EVs modulate the macrophage and intestinal epithelial barrier. ResultsEscherichia coli was enriched in weaned diarrheic piglets, while Lactobacillus johnsonii (L. john) showed a negative correlation with Escherichia coli. The transmission of diarrheic illness symptoms was achieved by transferring fecal microbiota, but not metabolites, from diarrheic pigs to germ-free (GF) mice. L. john's intervention prevented the transmission of disease phenotypes from diarrheic piglets to GF mice. L. john also reduces the gut inflammation induced by ETEC K88. The EVs secreted by L. john demonstrated enhanced efficacy in mitigating the adverse impacts induced by ETEC K88 through the modulation of macrophage phenotype. In vitro experiments have revealed that EVs activate M2 macrophages in a manner that shuts down ERK, thereby inhibiting NLRP3 activation in intestinal epithelial cells. ConclusionOur results reveal that intestinal microbiota drives the onset of diarrheic disease and that probiotic-derived EVs ameliorate diarrheic disease symptoms by modulating macrophage phenotypes. These findings can enhance the advancement of innovative therapeutic approaches for diarrheic conditions based on probiotic-derived EVs.

Efficient Inverted Perovskite Photovoltaics Through Surface State Manipulation.

Inverted perovskite solar cells (PSCs) are considered as the most promising avenue for the commercialization of PSCs due to their potential inherent stability. However, suboptimal interface contacts between electron transport layer (ETL) (such as C60) and the perovskite absorbing layer within inverted PSCs always result in reduced efficiency and poor stability. Herein, a surface state manipulation strategy has been developed by employing a highly electronegative 4-fluorophenethylamine hydrochloride (p-F-PEACl) to effectively address the issue of poor interface contacts in the inverted PSCs. The p-F-PEACl demonstrates a robust interaction with perovskite film through bonding of amino group and Cl- with I- and Pb2+ ions in the perovskite, respectively. As such, the surface defects of perovskite film can be significantly reduced, leading to suppressed non-radiative recombination. Moreover, p-F-PEACl also plays a dual role in enhancing the surface potential and improving energy-level alignment at the interfaces between the perovskite and C60 carrier transport layer, which directly contributes to efficient charge extraction. Finally, the open-circuit voltage (Voc) of devices increases from 1.104 V to 1.157V, leading to an overall efficiency improvement from 22.34% to 24.78%. Furthermore, the p-F-PEACl-treated PSCs also display excellent stability.

Quantifying the Impact of Different Dietary Rumen Modulating Strategies on Enteric Methane Emission and Productivity in Ruminant Livestock: A Meta-Analysis.

A meta-analysis was conducted with an aim to quantify the beneficial effects of nine different dietary rumen modulating strategies which includes: the use of plant-based bioactive compounds (saponin, tannins, oils, and ether extract), feed additives (nitrate, biochar, seaweed, and 3-nitroxy propanol), and diet manipulation (concentrate feeding) on rumen fermentation, enteric methane (CH4) production (g/day), CH4 yield (g/kg dry matter intake) and CH4 emission intensity (g/kg meat or milk), and production performance parameters (the average daily gain, milk yield and milk quality) of ruminant livestock. The dataset was constructed by compiling global data from 110 refereed publications on in vivo studies conducted in ruminants from 2005 to 2023 and anlayzed using a meta-analytical approach.. Of these dietary rumen manipulation strategies, saponin and biochar reduced CH4 production on average by 21%. Equally, CH4 yield was reduced by 15% on average in response to nitrate, oils, and 3-nitroxy propanol (3-NOP). In dairy ruminants, nitrate, oils, and 3-NOP reduced the intensity of CH4 emission (CH4 in g/kg milk) on average by 28.7%. Tannins and 3-NOP increased on average ruminal propionate and butyrate while reducing the acetate:propionate (A:P) ratio by 12%, 13.5% and 13%, respectively. Oils increased propionate by 2% while reducing butyrate and the A:P ratio by 2.9% and 3.8%, respectively. Use of 3-NOP increased the production of milk fat (g/kg DMI) by 15% whereas oils improved the yield of milk fat and protein (kg/d) by 16% and 20%, respectively. On the other hand, concentrate feeding improved dry matter intake and milk yield (g/kg DMI) by 23.4% and 19%, respectively. However, feed efficiency was not affected by any of the dietary rumen modulating strategies. Generally, the use of nitrate, saponin, oils, biochar and 3-NOP were effective as CH4 mitigating strategies, and specifically oils and 3-NOP provided a co-benefit of improving production parameters in ruminant livestock. Equally concentrate feeding improved production parameters in ruminant livestock without any significant effect on enteric methane emission. Therefore, it is advisable to refine further these strategies through life cycle assessment or modelling approaches to accurately capture their influence on farm-scale production, profitability and net greenhouse gas emissions. The adoption of the most viable, region-specific strategies should be based on factors such as the availability and cost of the strategy in the region, the specific goals to be achieved, and the cost-benefit ratio associated with implementing these strategies in ruminant livestock production systems.

Biomaterial design for regenerating aged bone: materiobiological advances and paradigmatic shifts.

China's aging demographic poses a challenge for treating prevalent bone diseases impacting life quality. As bone regeneration capacity diminishes with age due to cellular dysfunction and inflammation, advanced biomaterials-based approaches offer hope for aged bone regeneration. This review synthesizes materiobiology principles, focusing on biomaterials that target specific biological functions to restore tissue integrity. It covers strategies for stem cell manipulation, regulation of the inflammatory microenvironment, blood vessel regeneration, intervention in bone anabolism and catabolism, and nerve regulation. The review also explores molecular and cellular mechanisms underlying aged bone regeneration and proposes a database-driven design process for future biomaterial development. These insights may also guide therapies for other age-related conditions, contributing to the pursuit of 'healthy aging'.

Evolutionary adaptation in the laboratory and the process of retrograde engineering augment autotrophic proliferation in Saccharomyces cerevisiae

Genetic engineering provides various avenues for CO2 transformation into biological matter or bio-substances, aiding in mitigating the unsustainable utilization of organic raw materials that contribute detrimentally to global warming. The employment of widely recognized industrial microorganisms, like Saccharomyces cerevisiae, for the creation of innovative carbon (C) biomanufacturing frameworks may detach biological technology from raw materials with potential substitute applications in agricultural output. Lately, the primary C utilization of S. cerevisiae was rewired through a systematic manipulation strategy, enabling the resultant strains to achieve autotrophic growth with a maximum growth rate (μmax) of 0.002 h−1, which was subsequently enhanced to 0.02 h−1 via evolutionary engineering. By employing retrograde gene manipulation to manipulate Copy Number Variations (CNVs) variations happening in the genes encoding hexokinase and nicotinamide mononucleotide adenylyltransferase (NMNAT) following evolution, we assessed their impact on the enhanced self-sustaining characteristics. The modified CNVs induced reduced catalytic capabilities in potential bifurcation reactions and energy-balancing-related chemical processes. Moreover, we demonstrate how subsequent evolution enables peroxisomal intake and augments proliferation in self-sustaining circumstances. The genetically modified S. cerevisiae strains provide a foundation for the advancement of a versatile innovation that harnesses CO2 for the manufacturing of high-value goods, including cellular organic matter, specialized catalysts, and compounds while circumventing the consumption of organic raw materials alongside potential substitute applications in agricultural output. Additionally, the detection and validation of three critical mechanisms might facilitate the assimilation of foreign CBB cycles or analogous routes to foreign microorganisms.

Genome editing in Acinetobacter baumannii through enhanced natural transformation.

Acinetobacter baumannii, a multidrug-resistant bacterium has become a significant cause of life-threatening infections acquired in hospitals worldwide. The existing drugs used to treat A. baumannii infections are rapidly losing efficacy, and the increasing antimicrobial resistance, which is expected to turn into a global health crisis, underscores the urgency to develop novel prevention and treatment strategies. We reasoned that the discovery of novel virulence targets for vaccine and therapy interventions requires a more enhanced method for the introduction of multiple elements of foreign DNA for genome editing than the current methods of natural transformation techniques. Herein, we employed a novel and a much-improved enhanced technique for the natural transformation of elements of the genome editing system CRISPR-Cas9 to suppress specific genomic regions linked to selectively suppress bacterial virulence. We modified the genome of the laboratory-adapted strain of A. baumannii BAA-747 by targeting the AmpC, as a marker gene, for disruption by three different genomic manipulation strategies, and created mutant strains of A. baumannii that are, at least, fourfold susceptible to ampicillin. This work has established an optimized enhanced natural transformation system that enables efficient genome editing of pathogenic bacteria in a laboratory setting, providing a valuable future tool for exploring the function of unidentified virulence genes in bacterial genomes.

A Mode-Coupling Model of Colloid Thermophoresis in Aqueous Systems: Temperature and Size Dependencies of the Soret Coefficient.

Thermophoresis allows for the manipulation of colloids in systems containing a temperature gradient. A deep understanding of the phenomena at the molecular level allows for increased control and manipulation strategies. We developed a microscopic model revealing different coupling mechanisms for colloid thermophoresis under local thermodynamic equilibrium conditions. The model has been verified through comparison with a variety of previously published experimental data and shows good agreement across significantly different systems. We found five different temperature-dependent contributions to the Soret coefficient, two from bulk properties and three from interfacial interactions between the fluid medium and the colloid. Our analysis shows that the Soret coefficient for nanosized particles is governed by the competition between the electrostatic and hydration interfacial interactions, while bulk contributions become more pronounced for protein systems. This theory can be used as a guide to design thermophoretic transport, which is relevant for sensing, focusing, and separation at the microscale.

Earthen stories. Cross-craft strategies in raw material procurement and production at the tell site of Arslantepe (Türkiye) during the 4th millennium BCE

Arslantepe, located in south-eastern Turkey, is a multi-period settlement with a rich history of habitation dating back to at least the late 5th millennium BCE and spanning into the Medieval period. Over millennia, the site underwent drastic cultural, socio-economic and political transformations, resulting in its current form as a 30-m-high artificial mound. This mound predominantly consists of earth, encompassing clay-based construction materials, assorted objects and discarded materials. This paper consolidates research on various earthen objects and fixtures from the site, investigating their material properties through X-ray Diffraction (XRD), X-ray Fluorescence (XRF), sediment micromorphology and ceramic petrography. The focus is on characterising the diverse earthen products as well as assessing differences and similarities in the procurement and manipulation of raw materials during the Late Chalcolithic period. Earth emerged as a pivotal resource for Arslantepe communities, showcasing diverse strategies of collection, manipulation and utilisation-a compelling example of cross-crafting strategies. The findings reveal a multifaceted body of knowledge intertwined with the exploitation of this resource, emphasising distinct technological expertise, environmental considerations, as well as cultural preferences and socio-economic factors. Ultimately, the integrated examination of cross-craft strategies in the 4th millennium BCE Arslantepe settlement provides a unique glimpse into communities of practice and social networks centred around the utilisation of earth, contributing to a deeper understanding of past societies.

Ризома как механизм манипуляции в немецкоязычном журналистском тексте

The research focuses on the pressing issue of contemporary political discourse – the technologies of manipulation in the media space, specifically the linguistic mechanisms for transmitting pragmatic attitudes and value orientations in journalistic texts. These processes directly correlate with the phenomenon of increasing entropy in the text and, as the study has shown, largely arise from the rhizome - the nonlinear nature of organizing integrity. The research aim is to identify the linguistic mechanisms underlying the rhizomatic structure of media text. The scientific novelty of the research lies in the fact that for the first time, using a specific info-cause as an example, the rhizome is examined as a mechanism for implementing manipulative strategies in the modern German-speaking media space; the conditioned technologies of modeling pragmatic attitudes by the rhizome are revealed; the explicit and implicit mechanisms of implementing this process are described. The obtained results have shown that in journalistic texts, the rhizome manifests itself as multi-vectorial and the contradictory transmission of information, greatly enhancing the possibilities of interpretations inherent in the language structure, becoming a significant mechanism for implementing manipulative strategies.

Controllable Manipulation of Large-Volume Droplet on Non-Slippery Surfaces Based on Triboelectric Contactless Charge Injection.

Controllable droplet manipulation is crucial in diverse scientific and engineering fields. Traditional electric-based methods usually rely on commercial high-voltage (HV) power sources, which are typically bulky, expensive, and potentially hazardous. The triboelectric nanogenerator (TENG) is a highly studied device that can generate HV output with limited current, showing great potential in droplet manipulation applications. However, current TENG-based approaches usually utilize traditional free-standing TENGs that produce short-pulsed alternating-current signals. This limitation hinders continuous electrostatic forces necessary for precise droplet control, leading to complex circuitry and suboptimal droplet motion control in terms of volume, distance, direction, and momentum. Here, a triboelectric contactless charge injection (TCCI) method employing a novel dual-functional triboelectric nanogenerator (DF-TENG), is proposed. The DF-TENG can produce both high voltage and constant current during unidirectional motion, enabling continuous corona discharges for contactless charge injection into the droplets. Using this method, a large-volume droplet (3000 µL) can be controlled with momentum up to 115.2 g mm s-1, quintupling the highest value recorded by the traditional methods. Moreover, the TCCI method is adaptable for a variety of non-slippery substrates and droplets of different compositions and viscosities, which makes it an ideal manipulation strategy for droplet transport, chemical reactions, and even driving solids.

Polarity-Mediated Antisolvent Control Enables Efficient Lanthanide-Based near-Infrared Perovskite LEDs.

Alloying lanthanide ions (Yb3+) into perovskite quantum dots (Yb3+:CsPb(Cl1-xBrx)3) is an effective method to achieve efficient near-infrared (NIR) luminescence (>950 nm). Increasing the Yb3+ alloying ratio in the perovskite matrix enhances the luminescence intensity of Yb3+ emission at 990 nm. However, high Yb3+ alloying (>15%) results in vacancy-induced inferior material stability. In this work, we developed a polarity-mediated antisolvent manipulation strategy to resolve the incompatibility between a high Yb3+ alloying ratio and inferior stability of Yb3+:CsPb(Cl1-xBrx)3. Precise control of solution polarity enables increased uniformity of the perovskite matrix with fewer trap densities. Employing this strategy, we obtain Yb3+:CsPb(Cl1-xBrx)3 with the highest Yb3+ alloying ratio of 30.2% and a 2-fold higher electroluminescence intensity at 990 nm. We lever the engineered Yb3+:CsPb(Cl1-xBrx)3 to fabricate NIR-LEDs, achieving a peak external quantum efficiency (EQE) of 8.5% at 990 nm: this represents the highest among perovskite NIR-LEDs with an emission wavelength above 950 nm.

Suppression of presynaptic corticostriatal glutamate activity attenuates L-dopa-induced dyskinesia in 6-OHDA-lesioned Parkinson's disease mice

A common adverse effect of Parkinson's disease (PD) treatment is L-dopa-induced dyskinesia (LID). This condition results from both dopamine (DA)-dependent and DA-independent mechanisms, as glutamate inputs from corticostriatal projection neurons impact DA-responsive medium spiny neurons in the striatum to cause the dyskinetic behaviors. In this study, we explored whether suppression of presynaptic corticostriatal glutamate inputs might affect the behavioral and biochemical outcomes associated with LID. We first established an animal model in which 6-hydroxydopamine (6-OHDA)-lesioned mice were treated daily with L-dopa (10 mg/kg, i.p.) for 2 weeks; these mice developed stereotypical abnormal involuntary movements (AIMs). When the mice were pretreated with the NMDA antagonist, amantadine, we observed suppression of AIMs and reductions of phosphorylated ERK1/2 and NR2B in the striatum. We then took an optogenetic approach to manipulate glutamatergic activity. Slc17a6 (vGluT2)-Cre mice were injected with pAAV5-Ef1a-DIO-eNpHR3.0-mCherry and received optic fiber implants in either the M1 motor cortex or dorsolateral striatum. Optogenetic inactivation at either optic fiber implant location could successfully reduce the intensity of AIMs after 6-OHDA lesioning and L-dopa treatment. Both optical manipulation strategies also suppressed phospho-ERK1/2 and phospho-NR2B signals in the striatum. Finally, we performed intrastriatal injections of LDN 212320 in the dyskenesic mice to enhance expression of glutamate uptake transporter GLT-1. Sixteen hours after the LDN 212320 treatment, L-dopa-induced AIMs were reduced along with the levels of striatal phospho-ERK1/2 and phospho-NR2B. Together, our results affirm a critical role of corticostriatal glutamate neurons in LID and strongly suggest that diminishing synaptic glutamate, either by suppression of neuronal activity or by upregulation of GLT-1, could be an effective approach for managing LID.

Temporally deuterogenic plasmonic vortices

Abstract Over the past decade, orbital angular momentum has garnered considerable interest in the field of plasmonics owing to the emergence of surface-confined vortices, known as plasmonic vortices. Significant progress has been made in the generation and manipulation of plasmonic vortices, which broadly unveil the natures of plasmonic spin–orbit coupling and provide accessible means for light–matter interactions. However, traditional characterizations in the frequency domain miss some detailed information on the plasmonic vortex evolution process. Herein, an exotic spin–orbit coupling phenomenon is demonstrated. More specifically, we theoretically investigated and experimentally verified a temporally deuterogenic vortex mode, which can be observed only in the time domain and interferes destructively in the intensity field. The spatiotemporal evolution of this concomitant vortex can be tailored with different designs and incident beams. This work extends the fundamental understanding of plasmonic spin–orbit coupling and provides a unique optical force manipulation strategy, which may fuel plasmonic research and applications in the near future.

Manipulative and Recruitment Strategies in Boko Haram Terrorist Statements

This paper investigates the discursive strategies deployed by Boko Haram terrorists (BHTs) to manipulate targets to accept their ideologies. Drawing insights from the discursive strategies by Reisigl and Wodak in critical discourse analysis, 10 BH statements released between 2009 and 2021 were qualitatively and quantitatively analysed. This paper examines the discursive tools BHTs typically deploy to authenticate their activities and manipulate their target to win and invite them to their side. Examining BHT accounts using this approach is capable of building opposing accounts capable of reducing terrorism in Nigeria, and by implication, in Africa and the world over.