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2021 ◽  
Vol 25 ◽  
pp. 225-245
Author(s):  
Fernando Luque Cuesta ◽  
Mª Carmen Hidalgo Rodríguez

The main objective of this study is the creation of an artistic ceramic project that reflects the current situation of the rural world as a consequence of industrial agriculture. Current agricultural and livestock production systems have negative environmental consequences, such as erosion and pollution, and cultural consequences, such as rural exodus or the extinction of indigenous germplasm. Through the study of the rural world in the municipalities of Casabermeja, Antequera and Orce, it has been possible to verify the detriment of these lands and their culture and, at the same time, the remains of ceramic plates found in these lands reflect this reality. The methodology used is theoretical-practical: through scientific references, the destruction of pre-industrial agricultural practices is exposed against industrial agriculture; experimentation with agricultural production techniques, both traditional and modern, show their compatibility; and, finally, artistic research, which recovers ceramic remains from the past to design three plates. The artistic work is proposed as an information and awareness means of a world problem, showing the compatibility between production and biodiversity, Nature as a source of culture, and human society as a dependent part of Nature. Este estudio tiene como objetivo fundamental la creación de un proyecto artístico de cerámica que refleje la situación actual del mundo rural como consecuencia de la agricultura industrial. Los actuales sistemas de producción agrícola y ganadera tienen consecuencias negativas medioambientales como la erosión y la contaminación, y culturales como el éxodo rural o la extinción de germoplasma autóctono. A través del estudio del mundo rural en los municipios de Casabermeja, Antequera y Orce, se ha podido comprobar el detrimento de estas tierras y su cultura y, al mismo tiempo, en los restos de platos cerámicos hallados en estos terrenos se encuentra el reflejo de esta realidad. La metodología usada es teórico-práctica: mediante referentes científicos se expone la destrucción de las prácticas agropecuarias preindustriales frente a la agricultura industrial; la experimentación con técnicas de producción agrícola, tanto tradicionales como modernas, evidencian su compatibilidad; y, finalmente, la investigación artística, que recupera restos cerámicos del pasado para diseñar tres platos. La obra artística se propone como medio divulgativo y de concienciación de un problema mundial, evidenciando la compatibilidad entre producción y biodiversidad, la Naturaleza como fuente de cultura, y la sociedad humana como parte dependiente de la Naturaleza.


2021 ◽  
pp. 76-81
Author(s):  
A. V. Kurepin ◽  
A. F. Pershin ◽  
V. N. Shevkunov

Relevance. When growing cucumbers in a greenhouse not equipped with additional lighting, especially in winter, there is a shortage of solar energy. To obtain high yields of cucumber at this time, it is necessary to select the most resistant to low light hybrids. The selection of genotypes resistant to this trait is a very important stage in the selection of cucumber for winter-spring turnover.The purpose of the study: search for an easy-to-use method for early diagnosis of cucumber resistance to insufficient illumination.Methods. The research was carried out at the variety testing site in the Gavrish Breeding Center (Krymsk city) of the Scientific Research Institute of Vegetable Crop Breeding, in winter-spring turnover conditions, in greenhouses not equipped with artificial lighting. Seedlings were planted in a permanent place in the greenhouse during the period of the lowest arrival of solar radiation in the year on December 21. The measurement of the height of the main stem was carried out on 31 days after planting the plants in a permanent place.Results. Measuring the height of the main stem before fruiting showed a significant variation of this trait in different cucumber hybrids. Further study of the correlation of the height of the main stem and yield revealed their high dependence. This fact suggests that a fairly simple measurable parameter has been found for evaluating different cucumber genotypes on the basis of resistance to low light. Regression analysis made it possible to divide the variability of the studied genotypes by yield into a dependent part of the height of the main stem and an additional one, which makes up to 30% of the yield increase. Further analysis of the high-yielding group has a high breeding value.


Author(s):  
Abdulkerim Magomedovich Saidov

The article discusses the issues of the complex sentence of the specified united type with the predicative – ad-verbial participle of the dependent part. There are identified and characterized its structural and semantic fea-tures compared to other types of subordinate clauses.


Polymers ◽  
2021 ◽  
Vol 13 (18) ◽  
pp. 3113
Author(s):  
Francisco Drusso Martinez-Garcia ◽  
Roderick Harold Jan de Hilster ◽  
Prashant Kumar Sharma ◽  
Theo Borghuis ◽  
Machteld Nelly Hylkema ◽  
...  

The proteins and polysaccharides of the extracellular matrix (ECM) provide architectural support as well as biochemical and biophysical instruction to cells. Decellularized, ECM hydrogels replicate in vivo functions. The ECM’s elasticity and water retention renders it viscoelastic. In this study, we compared the viscoelastic properties of ECM hydrogels derived from the skin, lung and (cardiac) left ventricle and mathematically modelled these data with a generalized Maxwell model. ECM hydrogels from the skin, lung and cardiac left ventricle (LV) were subjected to a stress relaxation test under uniaxial low-load compression at a 20%/s strain rate and the viscoelasticity determined. Stress relaxation data were modelled according to Maxwell. Physical data were compared with protein and sulfated GAGs composition and ultrastructure SEM. We show that the skin-ECM relaxed faster and had a lower elastic modulus than the lung-ECM and the LV-ECM. The skin-ECM had two Maxwell elements, the lung-ECM and the LV-ECM had three. The skin-ECM had a higher number of sulfated GAGs, and a highly porous surface, while both the LV-ECM and the lung-ECM had homogenous surfaces with localized porous regions. Our results show that the elasticity of ECM hydrogels, but also their viscoelastic relaxation and gelling behavior, was organ dependent. Part of these physical features correlated with their biochemical composition and ultrastructure.


2021 ◽  
Vol 2021 (9) ◽  
Author(s):  
Marieke Postma

Abstract In the vev insertion approximation (VIA) the spacetime dependent part of the mass matrix is treated as a perturbation. We calculate the source terms for baryogenesis expanding both the self-energy and propagator to first order in mass insertions, which gives the same results as the usual approach of calculating the self-energy at second order and using zeroth order propagators. This procedure shows explicitly the equivalence between including the mass in the free or in the interaction Lagrangian. The VIA source then originates from the same term in the kinetic equation as the semi-classical source, but at leading order in the derivative expansion (the expansion in diamond operators). On top, another type of derivative expansion is done, which we estimate to be valid for a bubble width larger than the inverse thermal width. This cuts off the divergence in the VIA source in the limit that the thermal width vanishes.


2021 ◽  
Author(s):  
Yu-Husan Lee ◽  
Jiashan Chen ◽  
Po-An Chen ◽  
Jen-Tang Sun ◽  
Bo-Hwi Kang ◽  
...  

Abstract BackgroundThe sign of contrast agent pooling (C.A.P.) in dependent part of the venous system were reported in some case reports, which happened in the patients before sudden cardiac arrest. Until now, there is no solid evidence enough to address the importance of the sign. This study aimed to assess the accuracy of the C.A.P. sign in predicting imminent cardiac arrest and the association of the C.A.P. sign with patient’s survival.MethodsThis is a retrospective cohort study. The study included 128 patients who visited the emergency department of Far Eastern Memorial Hospital, who received contrast computed tomography (CT) scan and then experienced cardiac arrest at the emergency department (from January 1, 2016 to December 31, 2018). With positive C.A.P. sign, the primary outcome is whether in-hospital cardiac arrest happens within an hour; the secondary outcome is survival to discharge.ResultsIn the study, 8.6% (N=11) patients had positive C.A.P. sign and 91.4% (N=117) patients did not. The accuracy of C.A.P. sign in predicting cardiac arrest within 1 hour is 85.94%. The C.A.P. sign had a positive association with IHCA within 1 hour after the CT scan (adjusted odds ratio 11.60, 95% confidence interval [CI] 1.97 – 68.20). The odd ration of survival to discharge is 0.0081 with positive C.A.P. sign (95% CI 0.00697 – 2.188).ConclusionThe C.A.P. sign can be considered as an alarm for imminent cardiac arrest and poor prognosis. The patients with positive C.A.P. sign were more likely to experience imminent cardiac arrest; in contrast, less likely to survive. Trial registrationThe study was approved by our institutional ethical committee (IRB No.108107-E).


2021 ◽  
Vol 12 ◽  
Author(s):  
Gaetano Scaramuzzo ◽  
Savino Spadaro ◽  
Elena Spinelli ◽  
Andreas D. Waldmann ◽  
Stephan H. Bohm ◽  
...  

Transpulmonary driving pressure (DPL) corresponds to the cyclical stress imposed on the lung parenchyma during tidal breathing and, therefore, can be used to assess the risk of ventilator-induced lung injury (VILI). Its measurement at the bedside requires the use of esophageal pressure (Peso), which is sometimes technically challenging. Recently, it has been demonstrated how in an animal model of ARDS, the transpulmonary pressure (PL) measured with Peso calculated with the absolute values method (PL = Paw—Peso) is equivalent to the transpulmonary pressure directly measured using pleural sensors in the central-dependent part of the lung. We hypothesized that, since the PL derived from Peso reflects the regional behavior of the lung, it could exist a relationship between regional parameters measured by electrical impedance tomography (EIT) and driving PL (DPL). Moreover, we explored if, by integrating airways pressure data and EIT data, it could be possible to estimate non-invasively DPL and consequently lung elastance (EL) and elastance-derived inspiratory PL (PI). We analyzed 59 measurements from 20 patients with ARDS. There was a significant intra-patient correlation between EIT derived regional compliance in regions of interest (ROI1) (r = 0.5, p = 0.001), ROI2 (r = −0.68, p < 0.001), and ROI3 (r = −0.4, p = 0.002), and DPL. A multiple linear regression successfully predicted DPL based on respiratory system elastance (Ers), ideal body weight (IBW), roi1%, roi2%, and roi3% (R2 = 0.84, p < 0.001). The corresponding Bland-Altmann analysis showed a bias of −1.4e-007 cmH2O and limits of agreement (LoA) of −2.4–2.4 cmH2O. EL and PI calculated using EIT showed good agreement (R2 = 0.89, p < 0.001 and R2 = 0.75, p < 0.001) with the esophageal derived correspondent variables. In conclusion, DPL has a good correlation with EIT-derived parameters in the central lung. DPL, PI, and EL can be estimated with good accuracy non-invasively combining information coming from EIT and airway pressure.


Universe ◽  
2021 ◽  
Vol 7 (7) ◽  
pp. 217
Author(s):  
Irina G. Pirozhenko

In this paper, we consider the vacuum energy of a scalar field in the spacetime of two non-parallel cosmic strings. To this end, we obtain metrics for orthogonal straight cosmic strings and for slightly nonparallel strings. In the first case, we derive the separation-dependent part of the vacuum energy in the leading order of string tension. The dependence of the vacuum energy on separation differs from that known for parallel strings. For two strings inclined at a small angle to each other, the approximation used simply reproduces the result for parallel strings, since the angle dependence enters the next to leading order. The results are compared with the Casimir interaction between two inclined cylinders.


Author(s):  
Davood Momeni ◽  
Phongpichit Channuie

In this paper, we investigate a feasible holography with the Kitaev model using dilatonic gravity in AdS2. We propose a generic dual theory of gravity in the AdS2 and suggest that this bulk action is a suitable toy model in studying quantum mechanics in Kitaev model using gauge/gravity duality. This gives a possible equivalent description for the Kitaev model in the dual gravity bulk. Scalar and tensor perturbations are investigated in details. In the case of near AdS perturbation, we show that the geometry still “freezes” as is AdS, while the dilation perturbation decays at the AdS boundary safely. The time-dependent part of the perturbation is an oscillatory model. We discover that the dual gravity induces an effective and renormalizable quantum action. The entanglement entropy for bulk theory is computed using extremal surfaces. We prove that these surfaces have a fold bifurcation regime of criticality.


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