bluuebunny/crossref_metadata_2025 huggingface dataset:
Un amor, una muerte: una lectura de “Nocturno del hueco” de Federico García Lorca
Authors: Velasco Estrada Jaime
Published: February 2023

En este trabajo se estudia “Nocturno del hueco” (Poeta en Nueva York, 1929) de Federico García Lorca, a partir de un acercamiento al modo en que se construye el ‘hueco’ en la voz poética. Se intenta explicar cómo y por qué García Lorca usa imágenes relacionadas con el mundo natural (plantas, animales y los cuatro elementos). Primero, se observa cómo usa los sentidos el poeta: existe una estrecha relación entre los sentidos y la manera en que aparecen los elementos naturales. Los sentidos determinan la interpretación que uno puede tener de los elementos naturales: la significación de estos está condicionada por una presencia o ausencia que se advierte sólo por ellos. Igualmente, se intuye que el vacío que habita al yo poético se ensancha hasta rozar la muerte.
Palabras clave: nocturno, vacío, sentidos, elementos naturales, amor y
muerte.
Un breve análisis sobre la construcción del amor en los cuerpos de las mujeres a través del hábito. Atisbos para pensar una ética feminista
Authors: Núñez Sandoval Karla Jhoana
Published: February 2023

En el presente artículo se pretende dar cuenta de cómo opera el hábito en el cuerpo de las mujeres, particularmente con respecto a la relación amorosa heterosexual-patriarcal. Para ello, se recurrirá a Simone de Beauvoir y a Jean Paul Sartre, desde ahí explicar a qué nos referimos con cuerpo. También se tomará la noción de hábito de Pierre Bourdieu para señalar el orden simbólico patriarcal en las relaciones amorosas sexo-afectivas. En cuanto al abordaje de la idea del amor, se realizará un recorrido histórico a partir del desarrollo de Marcela Lagarde, así como de su concepto de cautiverio, y, finalmente, apuntaremos algunas consideraciones de la ética del placer de Graciela Hierro a modo de conclusión.

Palabras clave: hábito, cuerpo, relación amorosa, orden simbólico patriarcal, violencia simbólica.
Left and Right in Space and Politics
Authors: Glaser Tina , Hellmann Jens H. , Pilz Naemi , Bohner Gerd
Published: February 2023

The terms left and right can refer to spatial or political orientations. We hypothesized that a match (vs. mismatch) of spatial position and political orientation would lead to more positive political judgments. In three experiments, German participants (total N = 517) evaluated statements from the political left-wing and right-wing spectrums as well as German political parties presented either on the left or on the right side of their screens. When statements were presented on the left, politically left statements as well as left-wing parties were evaluated more favorably than when these statements were presented on the right. Conversely, politically right statements and right-wing parties were evaluated more favorably when the statements were presented on the right versus left side of the screen. Cultural conservatism, need for cognitive closure, and openness to experience were assessed but did not mediate these effects. We discuss theoretical and practical implications of the results.
Anchoring in a Social Context: How the Possibility of Being Misinformed by Others Impacts One's Judgment
Authors: Reis Joana , Ferreira Mário B. , Mata André , Seruti Amanda , Garcia-Marques Leonel
Published: February 2023

Building on research about naïve theories of biases, we propose that people are more likely to engage in critical thinking when assessing others’ reasoning. Hence, anchoring effects should be reduced when anchor values are presented as others’ estimates and people perceive others as less knowledgeable (i.e., more prone to biases) than themselves. Three experiments tested this hypothesis by presenting the same anchors as other participants’ answers or without a specified source. This source manipulation was combined with explicit forewarnings about the anchoring effect, which have been shown to trigger debiasing efforts. In support of our hypothesis, results showed that anchors provided by a social source effectively reduced the anchoring effect and did so in a more reliable way than forewarnings. Furthermore, the response-time analysis in two of the experiments suggests that such attenuation was the result of deliberate adjustment.
Sensory and Choice Responses in MT Distinct from Motion Encoding
Authors: Levi Aaron J. , Zhao Yuan , Park Il Memming , Huk Alexander C.
Published: February 2023

The macaque middle temporal (MT) area is well known for its visual motion selectivity and relevance to motion perception, but the possibility of it also reflecting higher-level cognitive functions has largely been ignored. We tested for effects of task performance distinct from sensory encoding by manipulating subjects' temporal evidence-weighting strategy during a direction discrimination task while performing electrophysiological recordings from groups of MT neurons in rhesus macaques (one male, one female). This revealed multiple components of MT responses that were, surprisingly, not interpretable as behaviorally relevant modulations of motion encoding, or as bottom-up consequences of the readout of motion direction from MT. The time-varying motion-driven responses of MT were strongly affected by our strategic manipulation—but with time courses opposite the subjects' temporal weighting strategies. Furthermore, large choice-correlated signals were represented in population activity distinct from its motion responses, with multiple phases that lagged psychophysical readout and even continued after the stimulus (but which preceded motor responses). In summary, a novel experimental manipulation of strategy allowed us to control the time course of readout to challenge the correlation between sensory responses and choices, and population-level analyses of simultaneously recorded ensembles allowed us to identify strong signals that were so distinct from direction encoding that conventional, single-neuron-centric analyses could not have revealed or properly characterized them. Together, these approaches revealed multiple cognitive contributions to MT responses that are task related but not functionally relevant to encoding or decoding of motion for psychophysical direction discrimination, providing a new perspective on the assumed status of MT as a simple sensory area.

SIGNIFICANCE STATEMENTThis study extends understanding of the middle temporal (MT) area beyond its representation of visual motion. Combining multineuron recordings, population-level analyses, and controlled manipulation of task strategy, we exposed signals that depended on changes in temporal weighting strategy, but did not manifest as feedforward effects on behavior. This was demonstrated by (1) an inverse relationship between temporal dynamics of behavioral readout and sensory encoding, (2) a choice-correlated signal that always lagged the stimulus time points most correlated with decisions, and (3) a distinct choice-correlated signal after the stimulus. These findings invite re-evaluation of MT for functions outside of its established sensory role and highlight the power of experimenter-controlled changes in temporal strategy, coupled with recording and analysis approaches that transcend the single-neuron perspective.
Opioid Withdrawal Abruptly Disrupts Amygdala Circuit Function by Reducing Peptide Actions
Authors: Gregoriou Gabrielle C. , Patel Sahil D. , Pyne Sebastian , Winters Bryony L. , Bagley Elena E.
Published: February 2023

While the physical signs of opioid withdrawal are most readily observable, withdrawal insidiously drives relapse and contributes to compulsive drug use, by disrupting emotional learning circuits. How these circuits become disrupted during withdrawal is poorly understood. Because amygdala neurons mediate relapse, and are highly opioid sensitive, we hypothesized that opioid withdrawal would induce adaptations in these neurons, opening a window of disrupted emotional learning circuit function. Under normal physiological conditions, synaptic transmission between the basolateral amygdala (BLA) and the neighboring main island (Im) of GABAergic intercalated cells (ITCs) is strongly inhibited by endogenous opioids. Using patch-clamp electrophysiology in brain slices prepared from male rats, we reveal that opioid withdrawal abruptly reduces the ability of these peptides to inhibit neurotransmission, a direct consequence of a protein kinase A (PKA)-driven increase in the synaptic activity of peptidases. Reduced peptide control of neurotransmission in the amygdala shifts the excitatory/inhibitory balance of inputs onto accumbens-projecting amygdala cells involved in relapse. These findings provide novel insights into how peptidases control synaptic activity within the amygdala and presents restoration of endogenous peptide activity during withdrawal as a viable option to mitigate withdrawal-induced disruptions in emotional learning circuits and rescue the relapse behaviors exhibited during opioid withdrawal and beyond into abstinence.

SIGNIFICANCE STATEMENTWe find that opioid withdrawal dials down inhibitory neuropeptide activity in the amygdala. This disrupts both GABAergic and glutamatergic transmission through amygdala circuits, including reward-related outputs to the nucleus accumbens. This likely disrupts peptide-dependent emotional learning processes in the amygdala during withdrawal and may direct behavior toward compulsive drug use.
The effect of boric acid content on the properties of electrochemically prepared Ni–Fe/ITO thin films
Authors:   Department of Science Education, Bartın University, 74100, Bartın, Turkey, Saraç U. , Kaya M. ,   Vocational School of Health Service, Eskişehir Osmangazi University, 26480, Eskişehir, Turkey, Baykul M. C. ,   Department of Metallurgical and Materials Engineering, Eskisehir Osmangazi University, 26480, Eskişehir, Turkey
Published: February 2023

This paper reports the role of the boric acid (H3BO3) content in a sulphate based aqueous electrolyte (AE) on the magnetic characteristics, deposit composition, domain structure, surface morphologies and structural properties of the Ni–Fe/ITO thin film samples grown by electrochemical deposition (ED) technique. The results show that the amount of the H3BO3 must be controlled to obtain the proper Ni–Fe/ITO thin film samples without brittle properties. The influence of the H3BO3 content in the AE on the deposit composition, structural parameters and magnetic characteristics is found to be negligible. However, the roughness parameters and the size of the nodular particles are noticeably influenced by the H3BO3 content. All samples have nanosized crystallites in the range of 19.6–20.5 nm. The films possess almost the same magnetic squareness ratio (%11 ± 2) and coercivity values (49 ± 1 Oe). In all deposits, regardless of the H3BO3 content, quite large magnetic stripe domains with a width of 1.6 ± 0.2 μm are also detected. The films exhibit a uniform surface structure consisting of nodular particles. However, increasing H3BO3 content in the AE leads to a dramatic reduction in the width of the surface particles. Furthermore, the surface roughness of the samples considerably decreases as the H3BO3 content in the AE is increased.
Recycled α-Fe2O3 nanoparticles adsorbents from Nd-Fe-B waste for methylene blue adsorption
Authors:   Laboratory of Advanced Functional Materials, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China, Liu M. , Li Q.Y. ,   Laboratory of Advanced Functional Materials, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China, Gao K. ,   Laboratory of Advanced Functional Materials, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China, Li Y.J. ,   Laboratory of Advanced Functional Materials, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China, Liu W.Q. ,   Laboratory of Advanced Functional Materials, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China, Lu Q.M. ,   Laboratory of Advanced Functional Materials, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China, Zhang D.T. ,   Laboratory of Advanced Functional Materials, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China, Pang Z.S. ,   Ganzhou Fortune Electronic Co., Ltd., Ganzhou 341000, China, Yu X. ,   Ganzhou Fortune Electronic Co., Ltd., Ganzhou 341000, China, Yu C.H. ,   Ganzhou Fortune Electronic Co., Ltd., Ganzhou 341000, China, Zha S.S ,   Earth-Panda Advanced Magnetic Materials Co.,Ltd., Hefei, 231500, China, Liu Y.H. ,   Earth-Panda Advanced Magnetic Materials Co.,Ltd., Hefei, 231500, China, Yi X.F ,   Earth-Panda Advanced Magnetic Materials Co.,Ltd., Hefei, 231500, China, Yue M. ,   Laboratory of Advanced Functional Materials, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
Published: February 2023

Nanoparticles α-Fe2O3 were prepared using the waste liquid after recycling rare earths in Nd-Fe-B waste magnets. The most α-Fe2O3 particles have around 60-120nm diameters with the surface area of 144.51 m2 g -1 and pore size of around 5.0 nm. Methylene blue was used as a model pollutant to study the adsorption properties of the obtained α-Fe2O3 nanoparticles. The effects of contact time, pH value, loading mass of α-Fe2O3, and temperatures on the adsorption behavior were investigated. Results indicated that ultra-refined α-Fe2O3 particles can achieve an adsorption rate of 98% for the removal of methylene blue from waste liquids. Also, the removal of methylene blue by α-Fe2O3 particles presented an adsorption isotherm process which strongly fitted the pseudo-second-order kinetics model and Langmuir equation. The present work demonstrates a sustainable and efficient methodology for the re-use of Fe from magnet wastes and removal of MB, opening a promising and cost-effective avenue for the sewage-cleaning.
Etching characteristics of si wafer thinning in HF/H2O binary solution for microelectronic and nanopackaging applications
Authors:   Faculty of Science and Marine Environment, Universiti Malaysia Terengganu 21030 Kuala Nerus, Terengganu, Malaysia, Ariff R. , Sheng C. K. ,   Faculty of Science and Marine Environment, Universiti Malaysia Terengganu 21030 Kuala Nerus, Terengganu, Malaysia
Published: February 2023

The wet etching of silicon surfaces by the use of acidic or fluoride solutions is of both technological and fundamental significance, which is essentially to be applied to produce a reliable silicon chip at desired thickness for microelectronic packaging. In this work, we have investigated the wet etching effect on thickness dissipation, weight loss, etching rate, surface morphology and crystalline nature of Si wafer immersed in the 48 % HF/water solution. The etch rate was ascertained from the variation of weight loss and depth etched against time. The results show that the thickness reduction and weight loss of silicon increases as the etching time increases. Roughened surface is observed on the etched Si wafer surface under the high-resolution optical microscope. From the XRD analysis, it shows that the crystalline peak intensity of silicon becomes weaker after etching, implying the reduced light scattering from the formed amorphous structure surface on the Si substrate. After all, this finding can be valuably referred to produce a reliable Si thin wafer, which is crucial in thinner microelectronic devices fabrication and nanopackaging, and in turn reduces environmental pollution and energy consumption for future sustainability.
Characterization of electrodeposited Ni–MoS2 composite coatings under the influence of current density
Authors:   Physics Laboratory of Thin Films and Applications (LPCMA), University of Biskra, Algeria, Gana A. , Ben Temam H. ,   Physics Laboratory of Thin Films and Applications (LPCMA), University of Biskra, Algeria, Lekmine F. ,   Physics Laboratory of Thin Films and Applications (LPCMA), University of Biskra, Algeria, Naoun M. ,   Corrosion Laboratory, Mechanical Department, Faculty of Technology, Batna2 University, Algeria, Herzallah O. ,   Physics Laboratory of Thin Films and Applications (LPCMA), University of Biskra, Algeria
Published: February 2023

In this paper, the influence of current density on electrodeposited Ni–MoS2 composite coatings has been studied for the first time. Low carbon steel alloy has been selected as a substrate. The Ni–MoS2 composite coatings are deposited at a temperature of 48 °C with applied current densities of (1, 2, 3 and 4 A/dm2 ). The x-ray diffraction (XRD) analysis of electrodeposited Ni– MoS2 coatings depicts a number of sharp peaks indicating a good crystallinity. Using ASTM database, the peaks at 14°, 32°, 33°, 39°, 49° and 58° correspond to (200), (100), (101), (103), (105) and (110) hkl planes respectively. The morphology was examined by scanning electron microscopy (SEM). Microhardness measurements show that all Ni–MoS2 samples are harder than low carbon steel substrate. EDX analysis of the Ni–MoS2 composite confirmed that the fraction of MoS2 increased with the increase of applied current density. The study of corrosion properties was carried out in a 0.6M NaCl solution. The potentiodynamic polarization curve of electrodeposited Ni–MoS2 confirmed that the corrosion resistance increases with the decrease of applied current density. In addition, Electrochemical tests show that the optimal value of applied current density is 3 A/dm2 in the sense of the least value of Ecorr = -314,1 mV and the best resistance was Rp = 9.52 K.cm2
First principle study of Er, co-doped Fe and Yb of NaBiF6; a promising materials for optoelectronic and transport properties; probed by DFT
Authors:   Department of Physics, Hazara University, Mansehra, Pakistan, Ullah S. , Azam S. ,   Faculty of Engineering and Applied Sciences, Department of Physics, RIPHAH International University, Islamabad, Pakistan, Gul B. ,   National University of Sciences and Technology (NUST), Islamabad, Pakistan, Subhan F. ,   Department of Physics, Abdul Wali Khan University, Mardan, Pakistan, Muhammad S. ,   Department of Physics, Hazara University, Mansehra, Pakistan, Dahshan A. ,   Department of Physics - Faculty of Science - King Khalid University, P.O. Box 9004, Abha, Saudi Arabia., Ahmad S. S. ,   Department of Physics, University of Swabi, Pakistan, Kalsoom A. ,   Department of Physics, The Government Sadiq College Women University, Bahawalpur, Pakistan, Faisal S. ,   Government Post Graduate College, Swabi, Pakistan, Hegazy H. H. ,   Department of Physics - Faculty of Science - King Khalid University, P.O. Box 9004, Abha, Saudi Arabia
Published: February 2023

Despite of getting higher efficiencies from hybrid perovskite solar cells, it is necessary to investigate stable and desirable bandgap materials. We introduced new promising class of double perovskites (DPs) materials using density functional theory predictions, for solar cells applications. The results of band structure show that Er along with the co-doped Fe and Yb of NaBiF6 with intermetallic nature. The optical properties have studied by considering interband transitions, where many levels of optical transitions is observed. We calculated optical dispersions e.g real and imaginary parts of complex dielectric function, energy loss function, reflectivity, absorption coefficient, refractive index and optical conductivity as function of photon energy from 0 to 14 eV for both spins up and down polarizations. The investigated materials contains high spin symmetry except at low energies, weakly photons reflected in IR and visible regions and absorb photons strongly in the UV region. These optical properties may be used for applications in optoelectronic devices.
Effect of deposition time on optical properties of CuO thin film prepared by chemical bath deposition method
Authors:   The Directorate General of Education in Salah al-Din, Iraq, Aswad T. A. , Abbas T. A. ,   The Directorate General of Education in Salah al-Din, Iraq, Ali G. G. ,   Department of Physics, College of Education for Pure Science, Mosul University, Mosul, Iraq
Published: February 2023

In this paper, thin films of copper oxide (CuO) deposited on glass slides using chemical bath deposition method. Aqueous copper sulfate (CuSo4.5H2O) used to obtain the required solution. The films prepared during different deposition times (1, 4 and 8) days at room temperature. The effect of deposition time on the optical properties of prepared films was studied. Optical measurements of copper oxide (CuO) thin films calculated from the transmittance and absorbance spectrum in the range (200-1000) nm using a UV-VIS spectrophotometer. The results showed that, in general in the visible region of the electromagnetic spectrum, all optical constants decrease with increasing wavelength and increase with increasing deposition time, except for transmittance, they increase with increasing wavelength and decrease with increasing deposition time. Finally, it was noticed that the value of the energy gap ranges between (1.8 eV - 2 eV) as it decreases with increasing deposition time.
Effect of current density on electrodeposited cobalt ferrous tungsten magnetic thin films
Authors:   Department of Physics, Vivekanandha College of Engineering for Women, Tiruchengode 637 205, Tamil Nadu, India, Aruna Christy T. , Thangaraj N. ,   Department of Physics, Velalar College of Engineering and Technology, Erode 638 012, Tamil Nadu, India, Sasikumar D. ,   cDepartment of Physics, Arignar Anna Govt. Arts College, Namakkal 637 002, Tamil Nadu, India
Published: February 2023

Co-Fe-W electrodeposited magnetic thin film properties were studied to identify the possible applications in different area. The film was prepared using the electrodeposition method with different current densities, in order to get the uniform deposition with different thickness. A vibrating sample magnetometer studies provide the value of magnetic saturation (Ms=0.112emu), retentivity (Mr=0.020emu) and coercivity (Hc=88.95Oe). The prepared film is (45min, thickness is 3.10μm) more suitable to develop tiny integrated memory devices. X-ray diffraction studies (XRD) confirm the cubic crystalline nature of the prepared thin films. Surface morphology analysis clearly shows the uniform thickness (0.2 μm) of the thin film [scanning electron microscope (SEM)]. The highest percentage of Co, Fe and W composition in the thin films were obtained by using energy dispersive X-ray analysis. The maximum hardness value is 212/7.5 mAcm2 for 45min and best adhesion with desirable magnetic properties have been reported in the present communication.
Photocatalytic degradation of potassium permanganate using zinc oxide nanoparticles
Authors:   Nanotechnology Research Laboratory, Department of Physics, Faculty of Science, University of Tabuk, Tabuk P.O. Box 741, Tabuk 71491, Saudi Arabia, Al-Ghamdi S. A. , Al-Qarni Mohammed S. ,   Nanotechnology Research Laboratory, Department of Physics, Faculty of Science, University of Tabuk, Tabuk P.O. Box 741, Tabuk 71491, Saudi Arabia, Al-Shehri Fahad A. ,   Nanotechnology Research Laboratory, Department of Physics, Faculty of Science, University of Tabuk, Tabuk P.O. Box 741, Tabuk 71491, Saudi Arabia, Mbarki Ahmed H. ,   Nanotechnology Research Laboratory, Department of Physics, Faculty of Science, University of Tabuk, Tabuk P.O. Box 741, Tabuk 71491, Saudi Arabia, Al-Rashidi Mohammed A. ,   Nanotechnology Research Laboratory, Department of Physics, Faculty of Science, University of Tabuk, Tabuk P.O. Box 741, Tabuk 71491, Saudi Arabia, Abd-Elnaiem A. M. ,   Physics Department, Faculty of Science, Assiut University, Assiut 71516, Egypt, Rashad M ,   Nanotechnology Research Laboratory, Department of Physics, Faculty of Science, University of Tabuk, Tabuk P.O. Box 741, Tabuk 71491, Saudi Arabia
Published: February 2023

In this work, zinc oxide (ZnO) nanoparticles were prepared by the solid-solid reaction technique. The photocatalytic efficiency, using a ZnO nanoparticle as a catalyst, has been shown by investigating the degradation rate of an extreme quantity of potassium permanganate (KMnO4) in wastewater. The KMnO4 dye reveals a degradation rate of 47% by the irradiation of UV compared to less than 5% for methylene blue using the same experiment conditions by ZnO nanoparticles as a catalyst. Also, various kinetics models such as the pseudo-first-order, the pseudo-second-order, and the intra-particle diffusion models are applied to investigate the photocatalytic process. Moreover, Boyd and Elovic models were applied to study in detail the mechanisms of the photocatalytic degradation process.
The influence of propolis nanoparticles on dermal fibroblasts migration: premises for development of propolis-based collagen dermal patches
Authors:   University of Oradea, Faculty of Medicine and Pharmacy, 10 P-ta 1 Decembrie, 410073 Oradea, Romania, Pasca P. M. , Cavalu S. ,   University of Oradea, Faculty of Medicine and Pharmacy, 10 P-ta 1 Decembrie, 410073 Oradea, Romania
Published: February 2023

Knowing the biological and pharmacological properties of propolis, the first goal of our study was to prepare and characterize a propolis nano-formulation (NPs) in order to be used for wound healing applications. The ability of propolis NPs to stimulate the migration of dermal fibroblasts in vitro was assessed by scratch test assay. The concentration of 200 μg/mL propolis NPs was found to have similar effect as the positive control. The second goal was to prepare a propolis-collagen membrane and to investigate the morphological and nanoindentation properties by AFM. The ultrastructure network of collagen fibrils was not affected by incorporation of propolis NPs, showing a nano-porous structure, favorable for soft tissue regeneration applications. Enzymatic degradation assay indicated a reduced degradation rate upon incorporation of propolis NPs in collagen matrix.
Fabrication of low density carbon foams by gel-casting method from sucrose/microcapsules
Authors:   School of Material Science and Engineering, Shenyang Ligong University, Shenyang 110159, China, Yu H. H. , Liu H. ,   School of Material Science and Engineering, Shenyang Ligong University, Shenyang 110159, China, Chen H. K. ,   Science and Technology on Advanced Functional Composites Laboratory,Aerospase Research Institute of Material and Processing Technology100076 China, Wang S. M. ,   School of Material Science and Engineering, Shenyang Ligong University, Shenyang 110159, China, Liu Q. Z. ,   Science and Technology on Advanced Functional Composites Laboratory,Aerospase Research Institute of Material and Processing Technology100076 China, Li X. ,   School of Material Science and Engineering, Shenyang Ligong University, Shenyang 110159, China
Published: February 2023

The carbon forms made from sucrose and microcapsules have successfully fabricated using gel-casting method. The structure, density, compressive strength and thermal conductivity were characterized. Carbon foams have porous structure of open cells and closed cells. The density of carbon foams is regulated in the range of 0.29–0.65 g/cm3, whereas the compressive strength is in the range of 1.03–20.25 MPa. The thermal conductivity at room temperature of carbon foams can be as low as 0.11 W/m·K . Therefore, these carbon foams have potential for use as the thermal insulator.
Synthesis and study of the optical and structural properties of Au and Ag nanoparticles by pulsed laser ablation (PLAL) technique
Authors:   Department of Physics, College of Science, University of Diyala, Diyala, Iraq, Kamil A. A. , Bakr N. A. ,   Department of Physics, College of Science, University of Diyala, Diyala, Iraq, Mubarak T. H. ,   Department of Physics, College of Science, University of Diyala, Diyala, Iraq, Al-Zanganawee J. ,   Department of Physics, College of Science, University of Diyala, Diyala, Iraq
Published: February 2023

Gold and silver nanoparticles (NPs) were synthesized by Q-switched (Nd:YAG) Pulsed Laser Ablation in Liquid (PLAL). The colloidal solutions are prepared separately using wavelength between 532-1064 nm pulsed laser ablation of gold and silver targets that are immersed in distilled water. The absorption spectra and color variations of gold and silver NPs at six different laser pulses (150, 250,350, 450, 550, 650 pulses) were investigated. UV–Vis spectroscopy test displayed bands ranged between 520 nm for gold and 404-410 nm for silver. TEM revealed a spherical shape of gold and a semi-spherical shape of silver NPs with an average sizes of (7.95 nm to 11.36 nm) and (15.62 nm to 20.49 nm) from two pulses (150 and 650), respectively. At all numbers of pulses applied, XRD showed a cubic crystalline structure of Au particles, as well as the creation of a pure cubic crystal structure of Ag particles and another cubic crystal structure attributed to AgO particles.
Preparation of amorphous and crystalline titanium dioxide on FTO: ITS characterization and photo- catalyticeffect on eriochrome black T
Authors:   Laboratory of Energy and electrochemistry of solid Process Engineering Department Faculty of Technology, U.F.A. Sétif, 19000, Algeria, Chaabia N. , Abdi D. ,   Laboratory of Energy and electrochemistry of solid Process Engineering Department Faculty of Technology, U.F.A. Sétif, 19000, Algeria, Kamarchou A. ,   Laboratory of pollution and waste treatement – University Kasdi merbah, PB – 30000, Ouargla, Algeria, Berchi A. ,   Laboratory of Energy and electrochemistry of solid Process Engineering Department Faculty of Technology, U.F.A. Sétif, 19000, Algeria, Rahal F. ,   VTRS Laboratory, of Hamma Lakhdar, University, P.O. Box 789, 39000 El-Oued, Algeria, Benhamida S. ,   Laboratoire de Rayonnement et Plasmas et Physique des Surfaces Université Kasdi Merbah, Ouargla 30 000, Algeria
Published: February 2023

In this work, thin films of TiO2 were electrodeposited by photocatalytic efficiency of glass materials coated with TiO2 as an additive layer on FTO substrates. We have studied the characterization of TiO2 electrodeposited on FTO by several methods such as cyclic voltammetry, X-ray diffraction (XRD), scanning electron microscopy SEM, the energy dispersive spectroscopy device (EDS) and microscopy atomic force (AFM). The crystalline deposits were used as catalysts for the photocatalytic oxidation of black dye Eriochrome black T, under an irradiation source (UV lamp 365 nm). The results revealed that the dye undergone slight degradation under UV illumination. Using the spectrophotometer measurements, the rate of discoloration was estimated from the residual concentration.
Photocatalytic reduction of CO2 into solar fuels using M-BTC metal organic frameworks for environmental protection and energy applications
Authors:   Department of Electrical and Electronics Engineering, University College of Engineering, Panruti, Tamilnadu, India 607106, Thamizhazhagan P. , Sivakarthik P. ,   Department of Chemistry, University College of Engineering, Panruti, Tamilnadu, India 607106, Balaji J. ,   Department of Physics, University College of Engineering, Panruti, Tamilnadu, India 607106
Published: February 2023

The photo catalytic reduction of CO2 into solar fuels and value-added chemicals is very interesting in the view point of green chemistry. It offers a clean and energy saving solution for the major environmental challenges of global warming and climate change. Recently, the use of transition metal-based MOFs photocatalyst has become more popular in this process due to their porous structure, abundance of metal site and organic functionalities. Herein, we derived divalent transition metal-basedMOFs (Zn2+, Cu2+ , Mn2+) as photocatalyst materials. The obtained photo catalyst materials were characterized by XRD, XPS, SEM and TEM technique to know the structural, optical, photocatalytic and morphological properties. They were subsequently tested for photo catalytic reduction of CO2 and results shows that all the heterostructure M-BTC possess significant ability of photo catalytic reduction of CO2. Moreover, among the three catalyst, Zn-BTC MOFs showed the outstanding performance towards of photo catalytic reduction of CO2. Gas chromatographic analysis confirms the formation of value-added products such as CH3OH, Methane and Carbon Monoxide. The possible photo catalytic mechanism discussed and supported its outstanding performance.
Reaction mechanism of Ni-Al during thermal spraying
Authors:   School of Mechanical & Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, 250353, PR China, Wang Z. L. , Li Q. ,   School of Material Science & Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, 250353, PR China, Han X. R. ,   School of Mechanical & Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, 250353, PR China, Ju C. ,   School of Mechanical & Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, 250353, PR China, Songa Q. H. ,   School of Mechanical & Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, 250353, PR China, Li J. J. ,   School of Mechanical & Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, 250353, PR China, Zhang Y. F. ,   School of Mechanical & Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, 250353, PR China, Sun Z. P. ,   School of Mechanical & Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, 250353, PR China
Published: February 2023

In this paper, the microstructure and element distribution of the Ni-Al coating prepared with the nickel coated aluminum composite powder, aluminum coated nickel composite powder and Ni-Al composite wire are studied by Scanning Electron Microscopy. Energy dispersive spectrometer element mapping was employed to obtain elemental composition at different areas of the powder and coating cross-section. X-ray diffraction and thermogravimetry differential thermal analysis are used to qualitatively analyze the phase. Finally, the reaction mechanism of Ni-Al in thermal spraying process is studied. It is found that the quality of Ni-Al coating obtained by aluminum coated nickel powder is better than that of nickel coated aluminum powder. Compared with Ni-Al composite powder, the spraying efficiency of Ni-Al composite wire flame spraying is higher.
Unravelling homologous recombination repair deficiency and therapeutic opportunities in soft tissue and bone sarcoma
Authors: Planas‐Paz Lara , Pliego‐Mendieta Alicia , Hagedorn Catherine , Aguilera‐Garcia Domingo , Haberecker Martina , Arnold Fabian , Herzog Marius , Bankel Lorenz , Guggenberger Roman , Steiner Sabrina , Chen Yanjiang , Kahraman Abdullah , Zoche Martin , Rubin Mark A , Moch Holger , Britschgi Christian , Pauli Chantal
Published: February 2023

Defects in homologous recombination repair (HRR) in tumors correlate with poor prognosis and metastases development. Determining HRR deficiency (HRD) is of major clinical relevance as it is associated with therapeutic vulnerabilities and remains poorly investigated in sarcoma. Here, we show that specific sarcoma entities exhibit high levels of genomic instability signatures and molecular alterations in HRR genes, while harboring a complex pattern of chromosomal instability. Furthermore, sarcomas carrying HRDness traits exhibit a distinct SARC‐HRD transcriptional signature that predicts PARP inhibitor sensitivity in patient‐derived sarcoma cells. Concomitantly, HRDhigh sarcoma cells lack RAD51 nuclear foci formation upon DNA damage, further evidencing defects in HRR. We further identify the WEE1 kinase as a therapeutic vulnerability for sarcomas with HRDness and demonstrate the clinical benefit of combining DNA damaging agents and inhibitors of DNA repair pathways ex vivo and in the clinic. In summary, we provide a personalized oncological approach to treat sarcoma patients successfully.
Análise da susceptibilidade às doenças imunopreveníveis em profissionais de saúde a partir do status vacinal
Authors: Pinto Agnes Caroline Souza , Almeida Maria Irismar de , Costa Pinheiro Patrícia Neyva da
Published: February 2023

Os riscos biológicos existentes nas unidades de atenção primária precisam ser avaliados. Assim, objetivamos descrever o status vacinal dos profissionais de nível superior que atuam na Estratégia Saúde da Família de Morada Nova/CE, visando reconhecer a susceptibilidade destes às doenças imunopreveníveis. É um estudo descritivo-exploratório realizado entre abril e dezembro de 2008. Utilizou-se o questionário estruturado para obter dados sobre a situação demográfica, as doenças imunopreveníveis e história vacinal. Foram avaliados 47 profissionais: 48% sem esquema vacinal para as principais doenças, 26% não possuíam comprovante de vacinação, e apenas 5% dispunham de cartão de infância; a maior cobertura foi BCG 81%, seguida de 64% para Hepatite B com somente 6,6% com comprovação sorológica; e 60% possuíam vacinação antitetânica. A vulnerabilidade destes profissionais torna necessária a estruturação de um programa de imunização para aqueles que atuam na atenção primária, associando intervenções que reduzam a exposição aos riscos biológicos no ambiente laboral.
Os sentimentos da clientela assistida com atividades lúdicas durante a sessão de hemodiálise
Authors: Teixeira Renata Brites , Resck Zélia Marilda Rodrigues
Published: February 2023

Este estudo tem como objetivo apreender os sentimentos gerados por atividades lúdicas desenvolvidas durante a hemodiálise. Adotou-se a abordagem qualitativa fenomenológica, considerando 12 clientes que se encontravam durante o tratamento hemodialítico em um Hospital Geral, de médio porte, situado em Alfenas, Minas Gerais. Utilizou-se entrevista aberta com a seguinte questão norteadora: Como você se sente com as atividades lúdicas desenvolvidas durante a sessão de hemodiálise? Foram apreendidos na totalidade das entrevistas somente sentimentos positivos, estes expressos pelos núcleos de sentidos: felicidade/alegria; entretenimento/diversão; amizade/gratidão. O desenvolvimento de atividades lúdicas mostrou-se benéfico, despertando alegria, risos e amenizando as quatro horas de hemodiálise. Os relatos obtidos mostram a importância do desenvolvimento do vinculo, da escuta e da humanização estabelecidos por atividade extensionista, como articuladora no processo de cuidar e, ainda permite a implementação de estratégias para o fortalecimento do processo de humanização da assistência.
Ten years of the Northeastern Nursing Network Journal — Rev Rene: a dream come true
Authors: de França Inácia Sátiro Xavier , de Sousa Francisco Stélio , Souto Rafaella Queiroga , Coura Alexsandro Silva , Ferreira Araújo Andressa Kaline , Freitag Pagliuca Lorita Marlena
Published: February 2023

The aim was to analyze the historical memory of the Rene Journal along a decade of its existence, highlighting its organization,scientific production and the achievements with regard to its indexing in databases. Phenomenological study whose data werecollected through a form submitted to free associations and interpreted in accordance with “The poetics of space”. The nuclei were:Federal University of Ceará (FUC) — The home of Rev Rene; the Rev Rene-nest — an open space for researchers in Health andrelated areas; Poetics of the drawers, safe and cupboards — the scientific capital of the journal at the readers’ disposal; The RevRene-shell — a poetic homology; The Rev Rene is round — Goals and actions for projection on the national and international scene.The Rev Rene transposed the dimension of the dream and has consolidated itself as a locus of science.
Vivência de uma equipe de enfermagem acerca do cuidado aos pacientes com câncer
Authors: Klüser Sinara Raskopf , Terra Marlene Gomes , Noal Helena Carolina , Lacchini Annie Jeanninne Bisso , Padoin Stela Maris de Mello
Published: February 2023

Objetivou-se compreender como a equipe de enfermagem vivencia o processo de cuidar do ser com câncer hospitalizado. Pesquisa qualitativa de natureza fenomenológica pautada no referencial teórico-filosófico de Maurice Merleau-Ponty e na hermenêutica de Paul Ricoeur, realizada em um Hospital Universitário do Rio Grande do Sul/Brasil. Foi realizada entrevista aberta com nove profissionais da equipe de enfermagem. Dos discursos, emergiram quatro temas: percepção de si como profissional, percepção do outro como ser-de-cuidado, percepção da ambigüidade vida e morte no cuidado, percepção da aprendizagem ao cuidar do outro. A vivência de ser profissional de enfermagem no cuidado do ser com câncer hospitalizado surge como uma maneira de atender as necessidades e proporcionar bem-estar ao outro e também como uma habilidade de olhar, ouvir, observar, sentir, estando disponível para fazer com, ou para o outro, o que ele não consegue realizar, confortando, compartilhando saberes e educando para o autocuidado.
Cuidados de enfermagem nas complicações da punção venosa periférica em recém-nascidos
Authors: Anjos Modes Priscilla Shirley Siniak dos , Gaíva Maria Aparecida Munhoz , Rosa Michelly Kim Oliveira , Granjeiro Cláudia da Fonseca
Published: February 2023

Objetivou-se analisar os cuidados de enfermagem na prevenção e tratamento das complicações da punção venosa periférica em recém-nascidos internados em Unidade de Tratamento Intensivo Neonatal. Estudo descritivo-exploratório, de abordagem qualitativa, realizado com profissionais de enfermagem que atuavam na atenção ao neonato em hospitais de Cuiabá, MT, Brasil. Os dados foram coletados com entrevista semiestruturada e analisados por meio da técnica de Análise Temática. Como medidas preventivas foram citadas: escolha adequada da veia para punção, observação da infusão, cuidados na administração das medicações e retirada do acesso. Para tratar as complicações: usar compressas mornas, frias, compressas com bicarbonato de sódio, retirar o acesso, pomadas antiinflamatórias, papaína e enfaixamento local. Os resultados evidenciaram que muitos profissionais de enfermagem realizavam cuidados preventivos e de tratamento sem o devido embasamento científico, tendo como conseqüência, resultados pouco eficazes. Os dados sugerem a necessidade de um aprimoramento da equipe de enfermagem relacionado a terapia intravenosa.
Condições referidas de saúde e grau de incapacidade funcional em idosos
Authors: França Inacia Sátiro Xavier de , Medeiros Fabíola de Araújo Leite , Sousa Francisco Stélio de , Baptista Rosilene Santos , Coura Alexsandro Silva , Souto Rafaella Queiroga
Published: February 2023

Objetivou-se investigar a condição de saúde e estimar a incapacidade funcional para atividades da vida diária em idosos adscritos às Unidades Básicas de Saúde da zona urbana de Campina Grande-PB. Estudo epidemiológico, realizado com 36 idosos. Utilizou-se questionário sociodemográfico e Índice de Barthel. A idade dos idosos variou de 65 a 90 anos, 72% eram aposentados e 100% da população tinham, até, o Ensino Fundamental e residiam com familiares. Os problemas de saúde comuns foram: hipertensão arterial (49%), dor (18%), incontinência urinária (12%) e diabetes mellitus (9%). Identificou-se: incapacidade funcional leve (34%) e grave (8%). Os idosos demandavam: consulta médica (25%), exames laboratoriais (25%), medicação (19%), dentes postiços (72%), dentadura (22%) e bengala (6%). Há necessidade de profissionais de saúde com capacitação em gerontologia e geriatria, objetivando assegurar a integralidade da assistência, contribuindo com a garantia da qualidade da atenção à saúde do idoso.
Percepção dos homens sobre o processo de abortamento
Authors: Dantas Larissa Correia Nunes , Diniz Normélia Maria Freire , Couto Telmara Menezes
Published: February 2023

Estudo descritivo e qualitativo, realizado em uma maternidade pública de Salvador-BA, cujo objetivo foi analisar a percepção de homens sobre aborto provocado. Foram entrevistados quatro homens, companheiros de mulheres que provocaram aborto, que compareceram à maternidade no momento da alta de suas companheiras, em janeiro/2009. Utilizou-se como instrumento de coleta a entrevista semiestruturada. Os dados foram organizados de acordo com a análise temática. Constatou-se que os homens percebiam o aborto como crime, diante de Deus e das leis; conheciam o misoprostol, porém desconheciam o processo e ignoravam as suas consequências para a mulher. A decisão pelo aborto foi exclusiva da mulher: os homens não tomavam parte nisso. Entretanto, eles relataram sentimentos ambivalentes decorrentes dessa vivência, explicando a decisão com base em motivos principalmente financeiros. Recomendam-se elementos de acolhimento para homens e a implantação de políticas públicas de saúde reprodutiva em uma ação compartilhada entre homens e mulheres.
Escolha de veias periféricas para terapia intravenosa em recém-nascidos pela equipe de enfermagem
Authors: Maciel Cardoso Juliana Maria Rêgo , Rodrigues Elisa da Conceição , Deusdará Rodrigues Benedita Maria Rêgo , Araújo Pacheco Sandra Teixeira de , Oliveira Faria Jane Cristina de
Published: February 2023

A implementação da terapia intravenosa no recém-nascido é complexa e desafiadora. Objetivou-se identificar as veias periféricas de escolha, para a punção venosa, no recém-nascido e descrever os critérios adotados pela equipe de enfermagem na escolha desses vasos. O cenário foi uma Unidade de Terapia Intensiva Neonatal do Rio de Janeiro, Brasil. Foram entrevistados dez profissionais de enfermagem de maio a junho de 2007. A análise temática originou as categorias: “Escolha da veia periférica em RN: prioridades da equipe de enfermagem” e “Critérios adotados e dificuldades enfrentadas na escolha das veias para punção venosa periférica”. As veias do arco dorsal da mão foram as de primeira escolha e as epicranianas as de última escolha. Os critérios de escolha foram visualização, facilidade, durabilidade e fármaco infundido. As dificuldades enfrentadas para a realização terapia intravenosa no recém-nascido foram o desgaste da rede venosa e a dor advinda das múltiplas punções.
O trabalho de enfermagem em saúde mental na Estratégia de Saúde da Família
Authors: Oliveira Francisca Bezerra de , Silva Joana Celine Costa e , Silva Victor Hugo Farias da , Cartaxo Carla Kalline Alves
Published: February 2023

Este estudo buscou identificar os cuidados oferecidos pelas enfermeiras da Estratégia de Saúde da Família frente às necessidades de saúde mental e avaliar se estes se encontravam fundamentados nas noções de integralidade, acolhimento/vínculo e escuta do sujeito. Estudo exploratório-descritivo, com abordagem qualitativa. Participaram 10 enfermeiras que atuavam nas Unidades Básicas de Saúde da Família de Cajazeiras — PB. As informações foram coletadas por meio de entrevistas semiestruturadas e analisadas pelo método de análise temática. Constatou-se que as concepções do processo saúde doença mental estiveram fundamentadas no modelo biológico, e que não havia comunicabilidade entre saúde mental e rede básica. Isto compromete a efetivação de uma prática pautada na noção de integralidade, acolhimento/vínculo e escuta do sujeito. Torna-se premente a necessidade de implementação de políticas públicas municipais que promovam articulação entre saúde mental e atenção básica, a sensibilização e a formação continuada dos profissionais de enfermagem.