Explore the vast range of titles available.

The purpose of the study is to assess the recreational load on forest landscapes within the Kostanay region. In this study, a landscape-dynamic basis is used to identify the relationship of recreational load in various types of natural complexes. An integral indicator of recreational load was calculated for each studied forest landscape and the stages of recreational digression were determined. The surveyed forests are located in an area with high attendance and are characterized by stages III and IV of digression. Especially high loads are carried by the forests of Arakaragai, which has a very dense network of paths.

An aging-related reduction in the brain’s functional reserve may explain why delirium is more frequent in the elderly than in younger people insofar as the reserve becomes inadequate to cover the metabolic requirements that are critically increased by stressors. The aim of this paper is to review the normal aging-related changes that theoretically compromise complex mental activities, neuronal and synaptic densities, and the neurocomputational flexibility of the functional reserve. A pivotal factor is diminished connectivity, which is substantially due to the loss of synapses and should specifically affect association systems and cholinergic fibres in delirious patients. However, micro-angiopathy with impaired blood flow autoregulation, increased blood/brain barrier permeability, changes in cerebrospinal fluid dynamics, weakened mitochondrial performance, and a pro-inflammatory involution of the immune system may also jointly affect neurons and their synaptic assets, and even cause the progression of delirium to dementia regardless of the presence of co-existing plaques, tangles, or other pathological markers. On the other hand, the developmental growth in functional reserve during childhood and adolescence makes the brain increasingly resistant to delirium, and residual reserve can allow the elderly to recover. These data support the view that functional reserve is the variable that confronts stressors and governs the risk and intensity of and recovery from delirium. Although people of any age are at risk of delirium, the elderly are at greater risk because aging and age-dependent structural changes inevitably affect the brain’s functional reserve.

Mimesis is one of the oldest, most fundamental concepts in Western aesthetics. This book offers a new, searching treatment of its long history at the center of theories of representational art: above all, in the highly influential writings of Plato and Aristotle, but also in later Greco-Roman philosophy and criticism, and subsequently in many areas of aesthetic controversy from the Renaissance to the twentieth century. Combining classical scholarship, philosophical analysis, and the history of ideas--and ranging across discussion of poetry, painting, and music--Stephen Halliwell shows with a wealth of detail how mimesis, at all stages of its evolution, has been a more complex, variable concept than its conventional translation of \"imitation\" can now convey. Far from providing a static model of artistic representation, mimesis has generated many different models of art, encompassing a spectrum of positions from realism to idealism. Under the influence of Platonist and Aristotelian paradigms, mimesis has been a crux of debate between proponents of what Halliwell calls \"world-reflecting\" and \"world-simulating\" theories of representation in both the visual and musico-poetic arts. This debate is about not only the fraught relationship between art and reality but also the psychology and ethics of how we experience and are affected by mimetic art. Moving expertly between ancient and modern traditions, Halliwell contends that the history of mimesis hinges on problems that continue to be of urgent concern for contemporary aesthetics.

La filosofía de Sócrates posee un carácter muy peculiar debido a la ausencia de doctrinas bien establecidas y a la inseparable vinculación entre vida y pensamiento. Por este motivo, el filosofar socrático debe entenderse unido a sus andanzas callejeras y a la revisión constante de cualquier planteamiento. Partiendo de esta hipótesis, el artículo pretende mostrar tanto la originalidad del pensamiento socrático y su concepción de la filosofía como la enorme influencia que ejerce en los textos de Platón, que emplean de manera sutil esos extravíos y divagaciones con el propósito de enriquecer la conversación, de dotar de profundidad a las argumentaciones y de obligar al lector a recorrer ese mismo camino sinuoso que es el de la reflexión filosófica. Con ello, ambos autores muestran que la filosofía no es tanto un saber sino una actividad.

The favorable mechanical properties and performance of TEMPO-oxidized cellulose nanofibril (TOCNF) films has been limited by their brittleness and the incapability of obtaining thick enough materials for self-supported applications. In this study, lamination with room temperature curable epoxy was used to combat brittleness, increase thickness, and produce a more damage tolerant material. The effect of the volume fraction and layer thickness of both phases (e.g., TOCNF, epoxy), the number of layers, and the overall total thickness of the laminate, on the tensile and flexural properties are investigated. Lamination was successful at increasing the toughness and thickness of TOCNF composites, resulting in an increased work of fracture that was associated with fracture retardation by crack digression in three-point bending specimens. The ultimate tensile strength and Young’s modulus were higher for laminates with low volume fractions of epoxy although not statistically different than the neat TOCNF films, but decreased with increasing volume fraction of epoxy, and with increasing number of TOCNF layers.Graphic abstract

The progressive and insidious gait and cognitive decline seen in older individuals without overt disease may result from a combination of age-dependent neuronal changes that are often exacerbated by vascular pathomechanisms. Emerging evidence suggests that slow gait and executive dysfunction are early phenomena in this decline and may further evolve to the development of falls and dementia. These early manifestations can be seen as “brain failure” and their co-occurrence suggests that they may share a common underlying mechanism. The authors argue that brain cortical control of motor and gait performance; and high complex cognitive functions such as executive function, share the same brain networks. Due to its particular watershed vascularization, these brain networks are highly susceptible to microvascular damage and the effects of vascular risk factors. A unified approach for evaluating and treating these two features of aging will close the gap in our understanding of cognitive–motor interactions and ultimately alter the pathways to disability. Besides the standard treatment for cognitive and mobility decline, the authors suggest that treating reversible vascular risk factors and hypertension, especially when they represent early manifestations of brain damage, has the potential to be a complementary method to prevent loss of mobility and cognitive decline in older adults.

In this work, TEMPO cellulose nanofibril (TOCNF) laminates were fabricated using a layup method. Two different TOCNF layers were tested, a neat TOCNF and a TOCNF with polyvinyl alcohol (PVA) strengthening aid with four different epoxy formulations as interlayers for the laminates. Flexural testing showed a correlation between the presence of stronger layers (TOCNFs + PVA) in the laminate with a higher flexural strength, bending modulus, and work of failure. Different modes of fracture within the laminates occurred based on epoxy type. A stiffer epoxy generated a reduced mechanical response and substantial intralayer damage. On the other hand, a more ductile epoxy increased the WOF of the laminates, inducing a higher delamination at the interface. The addition of a silane coupling agent (APTES) resulted in a higher compatibility between the TOCNFs and epoxy, generating an increased ultimate tensile strength (UTS) and a decreased energy to rupture associated with the reduction of crack digression mechanisms in the system. In general, laminates with stronger TOCNF layers (TOCNF + PVA) and increased adhesion (APTES), showed a flexural strength increase of 61%, a bending modulus increase of 80% and the same work of failure when compared with the original laminates. Finally, impact testing of TOCNF materials was performed for the first time in literature, the specific energy to rupture of laminates was comparable to those achieved by acrylic and borosilicate glass, while maintaining a higher or similar specific strength to glass. Laminates showed good transparency and low haziness.Graphic abstract

Digression is a discourse function that is identifiable and distinct from other similar functional strategies, and varies cross-linguistically. This paper investigates the way speakers of Spanish and English digress from their main discourse topics and how these transitions are marked. Once digression is defined by the proposal of four features considered to be inherent in this concept, the paper focuses on so-called 'digression formulating phrases', recurrent expressions which make explicit reference to the digression and signal that a new direction with respect to topic is proposed. The paper thus adopts a less common than the usual approach to discourse coherence and digression, whose literature has largely focused on discourse markers. The dataset, extracted from a corpus of parliamentary discourse, is analysed in an attempt to address two research questions. I investigate, first, the frequency and distribution of the selected digression formulating phrases in the two languages, and discern which of the two contexts of digression (i.e. beginnings and ends) is more highly marked, and, second, their use in connection to aspects such as syntactic configuration and position, and co-occurring features of semantic and pragmatic meaning. The contrastive perspective adds precision and richness to the treatment of digression.

During the course of the more than 2000 years of its recorded history, delirium has been given a very large number of different names, including phrenitis and paraphrenitis, mania and délire maniaque, (febrile, agitated, asthenic, lethargic, reversible toxic, symptomatic, exogenous) psychosis, inattention, acute and reversible dementia and insanity, amentia and sensorial phrenosis, reversible cognitive dysfunction, paralepsia, confusion and mental confusion, disorientation, dysergasia, and incoherence. Such a wide range of names with related definitions and pathogenic hypotheses not only bears witness to the interest that delirium has aroused in clinical investigators, but also reflects the difficulties in scientifically investigating its intrinsic nature. Furthermore, these difficulties have raised doubts about making a diagnosis that may explain why its incidence is reported to be under-estimated.