Science topic

# Conservation - Science topic

Explore the latest publications in Conservation, and find Conservation experts.

Publications related to Conservation (10,000)

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This study presents a four-year follow-up of an introduced population of Physa acuta Draparnaud, 1805, from initial stages to an established population. This introduction occurred on a small impacted stream of Vila do Abraão, the main village of Ilha Grande (Angra dos Reis, Rio de Janeiro, Brazil). The population size increased during the study,
an...

Understanding and Conserving Marine Biodiversity and Ecosystem
Services; MDPI Sustainability

Background:
Pancreato-biliary endoscopic procedures often need to be performed under deep intravenous sedation. The patients are at an increased risk of respiratory depression influenced by the anatomical dead space of the upper respiratory system. We aimed to evaluate the benefit of oxygen delivery through a single-sided trans-nasal catheter (TC)...

This manuscript studies a double fractional extended p-dimensional coupled Gross–Pitaevskii-type system. This system consists of two parabolic partial differential equations with equal interaction constants, coupling terms and spatial derivatives of the Riesz type. Associated with the mathematical model, there are energy and non-negative mass funct...

A novel machine learning model, eXtreme Gradient Boosting (XGBoost), was used for the purpose of evaluating the moment capacity of cold-formed steel (CFS) channel beams with edge-stiffened web holes subject to bending. A total of 1,620 data points were generated for training the XGBoost model, using an elasto-plastic finite element model which was...

Building conservation is an act designated to safeguard historic buildings from deterioration and eventual demolition. However, additions are essential to maintain the historic building’s function in many cases. Hence, the architect faces a thought process design that invariably accentuates significant values, while inevitably leaving others concea...

This study investigated the effect of self-monitoring on emotional labor
strategies (surface acting and deep acting) and the moderating role of gender in development. In anchoring the relationship between self-monitoring and emotional labor, the conservation of resources theory was used, while the moderating role of
gender was based on sociocultu...

Isoetes philippinensis, a critically endangered site-endemic lycophyte, was rediscovered after the last collection in 1969. The present study elucidates the morphology and ecology of the species-which have not been fully investigated-by describing the detailed morpho-anatomical characters, collecting water samples for physico-chemical analysis, and...

We derive entropy conserving and entropy dissipative overlapping domain formulations for systems of nonlinear hyperbolic equations in conservation form, such as would be approximated by overset mesh methods. The entropy conserving formulation imposes a two-way coupling at the artificial interface boundaries through nonlinear penalty functions that...

Background
Digital breast tomosynthesis with complementary ultrasound is a powerful imaging modality in detection of breast cancer. Magnetic resonance imaging has many limitations due to its low specificity multiple pitfalls especially signal-to-noise ratio, as well as the spatial resolution. Our purpose of the study is to evaluate the role of digi...

The main goal of the current paper is to analyze the impact of the Coriolis parameter on nonlinear waves by studying the geophysical KdV equation. More precisely, specific transformations are first adopted to derive one-dimensional and operator forms of the governing model. Solitons and complexiton of the geophysical KdV equation are then retrieved...

The transition from on-paper to on-screen reading seems to make it necessary to raise some considerations, as a greater attentional effort has been claimed for print texts than digital ones. Not surprisingly, most university students prefer this digital medium. This research aims to examine reading times by contextualizing this phenomenon into two...

Using an online, medical image labeling app, 803 individuals rated images of skin lesions as either "melanoma" (skin cancer) or "nevus" (a skin mole). Each block consisted of 80 images. Blocks could have high (50%) or low (20%) target prevalence and could provide full, accurate feedback or no feedback. As in prior work, with feedback, decision crit...

Hydro-morphodynamic modelling is an important tool that can be used in the protection of coastal zones. The models can be required to resolve spatial scales ranging from sub-metre to hundreds of kilometres and are computationally expensive. In this work, we apply mesh movement methods to a depth-averaged hydro-morphodynamic model for the first time...

In this paper we study the stability of homogeneous states in a continuous one spatial variable of conservation equations in Lagrangian coordinates, including terms of dissipation and relaxation. Local existence is proved applying Kawashima’s theorem for hyperbolic-parabolic systems [7]. We establish that when the subcharactertistic condition is sa...

Anthropogenic changes to the environment are facilitating the spread of animal pathogens into human populations. A global focus on detecting and containing emerging infectious diseases has deflected from the need for upstream prevention measures to reduce the risk of pathogen emergence. The drivers of infectious disease emergence have predominantly...

Circular RNAs (circRNAs) have become a research hotspot in recent years with their universality, diversity, stability, conservativeness, and spatiotemporal specificity. N ⁶ -methyladenosine (m ⁶ A), the most abundant modification in the eukaryotic cells, is engaged in the pathophysiological processes of various diseases. An increasing amount of evi...

This study investigated the excavation face stability of an Earth-Pressure-Balanced (EPB) shield tunnel under suffusion conditions using a finite difference method. Based on the seepage erosion tests on gap-graded sand, the suffusion process was properly simulated by the gradual variations in porosity, fines content, permeability coefficient , and...

Ecological networks (ENs) can bridge the paradox between conservation and development. Although many useful methods can be applied to establish ENs, their differences in spatial outputs and scale applicability need to be examined as landscape planners and policymakers start including implementation concerns. Dividing Jiangsu into three scales (i.e....

Objective
The rapid progress in sequencing technology and related bioinformatics tools aims at disentangling diversity and conservation issues through genome analyses. The foremost challenges of the field involve coping with questions emerging from the swift development and application of new algorithms, as well as the establishment of standardized...

Background
This study explores the difference in COVID-19 corpse handling protocol rejection before and after the innovation in rapid molecular test (RMT) postmortem examination and providing negative pressure mortuary rooms. This study is a retrospective observational study. Each of the corpse’s immediate family was explained the procedure for han...

This richly illustrated book provides an overview of the Ephemeroptera, Plecoptera and Trichoptera species that inhabit non typical aquatic environments (such as karstic springs, temporary brooks, moor and mires, lake shores) in the French and Swiss Jura Mountains. First of all, it is a field guide to recognize biotopes, but it also helps to identi...

We introduce a method for pricing consumer credit using recent advances in offline deep reinforcement learning. This approach relies on a static dataset and as opposed to commonly used pricing approaches it requires no assumptions on the functional form of demand. Using both real and synthetic data on consumer credit applications, we demonstrate th...

We consider a conservative ergodic measure-preserving transformation \begin{document}$ T $\end{document} of a \begin{document}$ \sigma $\end{document}-finite measure space \begin{document}$ (X, {\mathcal B},\mu) $\end{document} with \begin{document}$ \mu(X) = \infty $\end{document}. Given an observable \begin{document}$ f:X\to \mathbb R $\end{docum...

Emphysematous gastritis is a rare form of phlegmonous gastritis, characterized by the formation of air in the gastric wall by gas-forming microorganisms. Early diagnosis and treatment are important because of its fatal consequences (high morbidity and mortality). A 64-year-old woman presented to our emergency department with abdominal discomfort, n...

Bareke T, Addi A, Roba K, Kumsa T. 2022. Effect of storage temperature and packing materials on seed germination and seed storage behavior of Schefflera abyssinica. Nusantara Bioscience 14: 141-147. Knowledge of the seed storage behavior is crucial for developing appropriate ex-situ conservation strategies. The main objective of this study was to d...

Building pathologies can affect stability and functional requirements through the deterioration of the construction materials and elements. In addition, they can affect the thermal comfort of the users and increase the energy demand of the building.
This Special Issue collects the most recent works in the field of building pathology and diagnosis,...

En este trabajo se presenta una breve descripción de las simetrías gauge locales en general, a su vez que se exploran sus aplicaciones en física partículas. Una vez definidos los elementos principales de las teorías gauge tales como las propias transformaciones abelianas y no abelianas, se detallará el cómo permiten analizar la invariancia y conser...

India is credited with 2603 tree species, and the Global Tree Assessment confirmed
that 469 of these species are threatened with extinction. Urgent restoration and
conservation efforts are required to prevent the loss of tree diversity. The present
study is the first published attempt to reintroduce Buchanania barberi, a Critically
Endangered tree...

In this research paper, we utilize the splitting finite difference methods to obtain the numerical solutions of
one dimensional convection-diffusion equations with a discontinuous convective flux function. Based on operator splitting, the underlying equation is split into two successive initial value problems consisting of a pure convection equatio...

This paper studies the polynomial basis that generates the smallest n-simplex enclosing a given nth-degree polynomial curve in Rn. Although the Bernstein and B-Spline polynomial bases provide feasible solutions to this problem, the simplexes obtained by these bases are not the smallest possible, which leads to overly conservative results in many CA...

Energy stable and conservative nonlinear weakly imposed interface conditions for the incompressible Euler equations are derived in the continuous setting. By discretely mimicking the continuous analysis using summation-by-parts operators, we prove that the numerical scheme is stable and conservative. The theoretical findings are verified by numeric...

La flambée actuelle d'ados s'affirmant transgenre est préoccupante et a une dimension artificielle.
L'article décrit comment l'école secondaire pourrait conserver son sang froid et promouvoir le respect des uns et des autres: l'élève transgenre et ses condisciples

In the current practices, the evaluation method for the bearing capacity of small-diameter spiral piles is a conservative method performed on the safe side, since it does not consider the integration effect with the surrounding ground due to rotational press-fitting. In addition, the evaluation method for the bearing capacity of spiral piles subjec...

We study the two-dimensional constant coefficients Korteweg-de Vries equation, which was established not long ago in the literature. We construct group-invariant solutions and conservation laws for this equation. Lie group method is applied and the Lie point symmetries are derived. We show how one can derive travelling waves symmetry solutions give...

In this book we look at an alternative way of deriving the governing equations of fluid flow using conservation of energy techniques on a differential element undergoing shear stress or viscous forces as it moves along a pipe and we use the expression for friction coefficient for laminar flow to derive the equations. We also derive a friction coeff...

Handling non-linear constraints in continuous optimization is challenging, and finding a feasible solution is usually a difficult task. In the past few decades, various techniques have been developed to deal with linear and non-linear constraints. However, reaching feasible solutions has been a challenging task for most of these methods. In this pa...

This study analyzes propagation properties of sine beam in uniaxial crystal orthogonal to optical axis. Huygens‐Fresnel integral is solved to find the received field. Influence of source beam parameters, crystal refractive index settings, and propagation distance is analyzed in detail. Our results yield that intensity concentrates on minimum and ma...

Small in-frame insertion-deletion (indel) variants are a common form of genomic variation whose impact on rare disease phenotypes is understudied. The prediction of the pathogenicity of such variants remains challenging. X-linked incomplete congenital stationary night blindness (CSNB2) is a non-progressive, inherited retinal disorder cause by varia...

The extant primitively segmented spiders of the family Liphistiidae s. lat. are a monophyletic, morphologically and ecologically conservative group of "living fossils" that have undergone a surprisingly recent radiation in their small contiguous range in Southeast Asia. Splitting the family into two separate families, Liphistiidae s. str. and Hepta...

This work investigates stability of interfered digital filters with time-varying delay and saturation overflow arithmetic. A criterion is proposed to guarantee exponential stability of the state-delayed digital filters with saturation nonlinearities and external disturbance. The established condition is utilized to obtain the H∞\documentclass[12pt]...

We investigated how ideologically polarized civil society organizations (CSOs) in Turkey use Twitter. We analyzed tweets from 20 CSOs in Turkey for a period of 7 months by using the Information-Community-Action framework. For all types of CSOs, the number of information tweets was higher than the number of action tweets, which, in turn, was higher...

Over recent years, importance has been attributed to the application of criminal sanctions in the fight against IUU fishing due to the seriousness of the threat it represents for the conservation of marine living resources. This trend towards the criminalisation of certain activities related with IUU fishing has given rise to the appearance of the...

In a general one-sector model of optimal stochastic growth where the productivity of capital is bounded but may vary widely due to technology shocks, we derive a tight estimate of the slope of the optimal policy function near zero. We use this to derive a readily verifiable condition that ensures almost sure global conservation of capital (i.e., av...

Background
Throughout their range, red deer are a well-studied species. In Italy, this species occupies two ecologically different ranges: the Alps and the Apennines. Although several studies have described the spatial behaviour of red deer in the Italian Alps, no data are available for the Apennine population.
Results
The spatial behaviours of 13...

What does it mean to conserve performance, to sustain its life into the future? This online colloquium, "Performance Conservation: Interdisciplinary Perspectives," brings together artists and scholars of performance studies, anthropology, art history, musicology and conservation to approach the question of the ongoing life and afterlives of perform...

Effective management of depleted natural resources can be achieved only through changes in human actions. Opportunity costs represent the forgone benefits that would have flowed in the absence of conservation interventions. To the extent that opportunity costs reflect lost opportunities for extractive uses (e.g., fishing or logging), and to the ext...

Este artículo, se enmarca dentro del enfoque metodológico exploratorio con el objetivo de interpretar y explicar puntos fundamentales en el abordaje del agua en Guatemala, pretendiendo responder a preguntas centrales como ¿Cuál es el andamiaje legal del agua existente? ¿Qué escuelas de pensamiento económico podrían sugerirse para abordar la conserv...

To demonstrate the effect of evaporation on temperature measurement, we studied evaporation in the sensor of a skewer thermometer. We present a model for evaporation based on the principle of conservation of mass and conservation of energy, to reproduce the curves of temperature difference as a function of time. We analyze the phenomenon by adjusti...

Censusing wintering raptors has proved useful in detecting changes in populations. Israel is a well-known bottleneck for soaring birds in the autumn and the spring. Despite the many studies on migratory raptors in Israel, none have undertaken the study of the overwintering raptors consistently over extended periods, such as 1985-2022, a period of 3...

The ability to capture, store and distribute water safely is fundamental to the health of urban and rural settlements alike. This is true for Hyderabad city, located in India's semi-arid Deccan region. I argue that an exegesis of the nineteenth-century conservation plans for Hyderabad's large, built water reservoir, Hussain Sagar, reveal multiple h...

This paper supplements the biography of Fred Woodward (1939-2020), by adding 13 overlooked new taxa (10 species, 1 genus, and 2 family-level names) and by adding 51 overlooked publications, for a total of 93 publications. Woodward published primarily on Unionidae, Margaritiferidae, molluscan conservation, and molluscs as archaeological objects.

Critical incidents, defined as traumatic time-limited events, often happen unexpectedly, and have largely impacted employees in many ways. In this study, we apply the Conservation of Resources Theory as our overarching framework to examine whether and when employees involved in a critical work incident would experience helplessness at work, which m...

Climate change poses a serious threat to species, especially for endangered species. This is particularly true for the endangered tree Parrotia subaequalis, endemic to China. To date, little is known about its pattern of habitat distribution, and how it will respond under future climate change still remains unclear. Based on six climate variables a...

Mangrove wood harvesting is a common economic and subsistence activity in the Neotropic, whose effects on the forest structure in this community have been insufficiently assessed. The objective was to analyze the ecological effects of small-scale logging on mangroves in the eastern Mar Muerto coastal lagoon system, Mexican south Pacific; led to the...

Unifying quantum theory with general relativity is challenging because of several problems related to time and to collapse in quantum measurements. In the double-slit experiment, the questions are how the momentum of the photon is transferred to a specific location on the screen and how the double slit recoils accordingly. This work investigates if...

ABSTRACT
Although the distribution of Tulipa species in Uzbekistan is well documented, there is no clear
understanding of the importance of three classes of environmental variables, climate, soil type, and
topography, as determinants of their distribution. We mapped the richness of Tulipa species in
Uzbekistan, and conducted species distribution mo...

Background:
Shoulder stiffness resulting in motion loss can be caused by numerous conditions, the most common of which is adhesive capsulitis. Surgical intervention is often necessary when conservative methods fail. High-intensity stretch (HIS) treatment may be able to provide increased motion gains while avoiding the cost and complications of sur...

Staphylococcal nuclease domain-containing protein 1 (SND1) is an evolutionarily conserved multidomain protein, which has gained attention recently due to its positive regulation in several cancer progression and metastatic spread. However, the specific contribution of SND1 glycosylation in glioma remains uncertain. In the current study, we confirme...

Self-gravitating Newtonian systems consisting of a very large number of particles have generally defied attempts to describe them using statistical mechanics. This is paradoxical since many astronomical systems, or simulations thereof, appear to have universal, equilibrium structures for which no physical basis exists. A decade ago we showed that e...

The spectral lag features in gamma-ray bursts (GRBs) have been widely used to investigate possible Lorentz invariance violation (LIV). However, these constraints could depend on the unknown source-intrinsic time delays in different energy bands. Biesiada & Piórkowska theoretically proposed that gravitational lensing time delays in a strongly lensed...

Anthyllis hermanniae subsp. brutia, is an Italian endemic shrub occurring just in one locality by the Calabrian Ionian coast in southern Italy. Objective of this study is to provide data on population numbers, demography and ecology, as well as to identify the main threats on the long term conservation of the target taxon. The survey has been carri...

The family Poaceae is one of the richest families in the flora of Armenia. The article provides general information about the family in Armenia. Data are provided on the diversity of species, endemics, their conservation, species distribution by altitude, vegetation types. The article also offers suggestions on the prospects for the use of certain...

This paper is concerned with the stability and stabilization problem of a Takagi-Sugeno fuzzy (TSF) system. Using a non-quadratic function (well-known integral Lyapunov fuzzy candidate (ILF)) and some lemmas, new sufficient conditions are established as linear matrix inequalities (LMIs), which are solved with a stochastic fractal search (SFS). The...

Objectives
Previous studies on negative workplace gossip have neglected the role of gossip targets of supervisors. The purpose of this paper is to deepen our understanding of how subordinates’ negative workplace gossip affects supervisors’ work-related behaviors. Drawing upon conservation of resource theory, the authors propose that subordinates’ n...