bluuebunny/crossref_metadata_2025 huggingface dataset:
A rare diagnosis of an extraventricular neurocytoma
Authors: Gaggiotti Claudia , Giammalva Giuseppe Roberto , Raimondi Marco , Florena Ada Maria , Gerardi Rosa Maria , Graziano Francesca , Tumbiolo Silvana , Iacopino Domenico Gerardo , Maugeri Rosario
Published: March 2021

Background:

Extraventricular neurocytoma (EVN) is an extremely rare neoplasm of the central nervous system. As reported, it arises in a variety of locations, but mainly within the cerebral hemispheres. Despite its histological similarity with central neurocytoma (CN), EVN occurs outside the ventricular system and, in 2007, was recognized by the World Health Organization as a separate entity.

Case Description:

A 39-year-old man, with a ventriculoperitoneal shunt inserted for communicating hydrocephalus, was admitted at our Unit of Neurosurgery with a 1-month history of gait disturbance, postural instability, speech disorders, and occasional incontinence. Computed tomography scan and magnetic resonance imaging showed a mixed-density neoplasm in the left frontotemporal area, with anterior cerebral falx shift, and perilesional edema. The patient underwent surgical procedure; microsurgical excision of the lesion was performed through left pterional approach. Histopathological and immunohistochemical examination revealed monomorphic round cells of the neuronal lineage, with a percentage of Ki-67 positive nuclei <5% and no evidence of mitosis or necrotic areas. According to radiologic features, this pattern was compatible with the diagnosis of EVN. Patient had a favorable recovery and he is still in follow-up.

Conclusion:

Because of their rarity, clinical, radiologic, and histopathological characteristics of EVNs are not yet well defined, as well as the optimal therapeutic management. Whereas EVNs are rarely described in literature, we aimed to share and discuss our experience along with a review of the published literature.
The regime of good control
Authors: Li J. , Jacobs K.
Published: March 2021

We derive the equations of motion describing the feedback control of quantum systems in the regime of ``good control", in which the control is sufficient to keep the system close to the desired state. One can view this regime as the quantum equivalent of the ``linearized" regime for feedback control of classical nonlinear systems. Strikingly, while the dynamics of a single qubit in this regime is indeed linear, that of all larger systems remains nonlinear, in contrast to the classical case. As a first application of these equations, we determine the steady-state performance of feedback protocols for a single qubit that use unbiased measurements.
The decreasing property of relative entropy and the strong superadditivity of quantum channels
Authors: Amosov G.G. , Mancini S.
Published: March 2021

We argue that a fundamental (conjectured) property of memoryless quantum channels, namely the strong superadditivity, is intimately related to the decreasing property of the quantum relative entropy. Using the latter we first give, for a wide class of input states, an estimation of the output entropy for phase damping channels and some Weyl quantum channels. Then we prove, without any input restriction, the strong superadditivity for several quantum channels, including depolarizing quantum channels, quantum-classical channels and quantum erasure channels.
An O(m^2)-depth quantum algorithm for the elliptic curve discrete logarithm problem over GF(2^m)
Authors: Maslov D. , Mathew J. , Cheung D. , Pradhan D.K.
Published: March 2021

We consider a quantum polynomial-time algorithm which solves the discrete logarithm problem for points on elliptic curves over $GF(2^m)$. We improve over earlier algorithms by constructing an efficient circuit for multiplying elements of binary finite fields and by representing elliptic curve points using a technique based on projective coordinates. The depth of our proposed implementation, executable in the Linear Nearest Neighbor (LNN) architecture, is $O(m^2)$, which is an improvement over the previous bound of $O(m^3)$ derived assuming no architectural restrictions.
Eigenpath traversal by phase randomization
Authors: Boixo S. , Knill E. , Somma R.
Published: March 2021

A computation in adiabatic quantum computing is implemented by traversing a path of nondegenerate eigenstates of a continuous family of Hamiltonians. We introduce a method that traverses a discretized form of the path: At each step we apply the instantaneous Hamiltonian for a random time. The resulting decoherence approximates a projective measurement onto the desired eigenstate, achieving a version of the quantum Zeno effect. If negative evolution times can be implemented with constant overhead, then the average absolute evolution time required by our method is $\cO(L^{2} /\Delta)$ for constant error probability, where $L$ is the length of the path of eigenstates and $\Delta$ is the minimum spectral gap of the Hamiltonian. The dependence of the cost on $\Delta$ is optimal. Making explicit the dependence on the path length is useful for cases where $L$ is much less than the general bound. The complexity of our method has a logarithmic improvement over previous algorithms of this type. The same cost applies to the discrete-time case, where a family of unitary operators is given and each unitary and its inverse can be used. Restriction to positive evolution times incurs an error that decreases exponentially with the cost. Applications of this method to unstructured search and quantum sampling are considered. In particular, we discuss the quantum simulated annealing algorithm for solving combinatorial optimization problems. This algorithm provides a quadratic speed-up in the gap of the stochastic matrix over its classical counterpart implemented via Markov chain Monte Carlo.
Identification of a Zika NS2B Epitope for Which Absence of IgG Response Is Associated with Severe Neurological Symptoms and the Design of a Biomarker Capable of Discriminatory Diagnostics Between Severe and Non4 Severe Clinical Phenotypes
Authors: Loeffler Felix , Viana Isabelle F. T. , Fischer Nico , Coêlho Danilo F. , Santos Carolina , Purificacao Jr Antonio , Araujo Catarina , Leite Bruno , Durães-Carvalho Ricardo , Magalhaes Thereza , Morais Clarice , Tenório Cordeiro Marli , Lins Roberto , T.A. Marques Ernesto , Jaenisch Thomas
Published: March 2021

In this manuscript we describe the engineering of a biomarker for the diagnosis and prognosis of Zika-associated neurological disease. Although the causal association between congenital Zika virus (ZIKV) infection and neurological manifestations has been well documented in the recent years, biomarkers for proper diagnostic and disease outcome still remain to be defined. Combining high-density peptide array and multivariate analysis, we have identified an ZIKV epitope that is associated to a lack of IgG antibody response in patients with severe neurological symptoms. An engineered chimera was developed to discriminate between mild and severe clinical forms of the disease.
Peroxidase-Mimicking Nanozyme with Surface-Dispersed Pt Atoms as the Label for the Lateral Flow Immunoassay of C-Reactive Protein
Authors: Panferov Vasily , Byzova Nadezhda A. , V. Zherdev Anatoly , B. Dzantiev Boris
Published: March 2021

We report a new approach to synthesize nanozyme with low consumption of precious Pt-precursor and high peroxidase-mimicking activity. The synthesis includes the formation of gold nanoparticles (Au NPs), the overgrowth of a silver layer over Au NPs (Au@Ag NPs), and the galvanic replacement of Ag with PtCl62- leading to the formation of Au@Ag–Pt NPs with uniformly deposited catalytic Pt sites. The reported approach facilitates up to 20-times lower consumption of Pt precursor. The use of Au@Ag-Pt NPs as the catalytic label in lateral flow immunoassay results in a 65-fold lower limit of detection (15 pg/mL in serum).
Solvating Alkylamine Hofmann Elimination in Zeolites Through Cooperative Adsorption
Authors: Chen Han , Abdelrahman Omar
Published: March 2021

A kinetic investigation of the vapor phase Hofmann elimination of tert-butylamine over H-ZSM-5 reveals a carbocation mediated E1-like mechanism, where isobutene and ammonia are exclusively produced over Brønsted acid sites. Hofmann elimination kinetics are found to be insensitive to Al content or siting, varying only with alkylamine carbocation stability (rtertiary > rsecondary > rprimary). Under conditions of complete tert-butylamine surface coverage, experimentally measurable apparent kinetics are directly equivalent to the intrinsic kinetics of the rate determining unimolecular surface elimination. The direct measurement of elementary step kinetics served as a water-free reactive probe, providing a direct measurement of the impact of water on solid Brønsted acid catalyzed chemistries at a microscopic level. Over a range of temperatures (453‒513 K) and tert-butylamine partial pressures (6.8×10-2‒6.8 kPa), water reversibly inhibits the rate of Hofmann elimination. Despite expected changes in aluminosilicate hydrophobicity, the water-induced inhibition is found to be insensitive to Al content, demonstrated to be due to one water molecule per Brønsted acid site. Regardless of the significant reduction in the rate of Hofmann elimination, kinetic interrogations and operando spectroscopic measurements reveal that the coverage of TBA adsorbed on H-ZSM-5 is unaltered in the presence of water. Cooperative adsorption between the tert-butylammonium surface reactant and water adsorbed on a neighboring framework oxygen is proposed to be responsible for the observed rate inhibition, the surface dynamics of which is quantitatively captured through kinetic modeling of experimental rate measurements.
Pathophysiology of SARS-CoV-2 (COVID 19) viral infection
Authors: Maanya Bhardwaj
Published: March 2021

The city of Wuhan located in Hubei province of central China was burdened with a series of cases presenting with atypical acute respiratory infections in December 2019. Little did people know at that point in time, that a novel virus known as SARS-CoV-2 (COVID-19) or simply corona virus, was responsible for these peculiar presentations. COVID-19 had begun spreading at an alarming rate worldwide, eventually gaining official status as a global pandemic, as affirmed by the World Health Organisation (WHO) on 11 March 2020. By 6 July 2020, globally, there were 1.5 million cases and around 536 893 deaths. As the pandemic took its toll globally, scientists struggled to classify and specify the manifestations of the virus. Medical practitioners, microbiologists and scientists worldwide gradually joined forces to define COVID-19 as an infection characterised by an immense inflammatory reaction or cytokine storm which may cause acute respiratory distress syndrome (ARDS) and multi-organ dysfunction (MODS). During the latter half of 2020, multiple hospitals in India, France, America, Germany and Netherlands reported an increasing incidence of fatal invasive fungal infections in recovered SARS-CoV-2 patients. Increased severity of infections as well as mortality was observed in immunocompromised patients and those with co existing medical illnesses such as diabetes and hypertension. Furthermore, even though many patients recovered from SARS-CoV-2 infection, it was noted that their immunity post recovery was significantly diminished, and it was during this period they were more susceptible to fatal bacterial and fungal co-infections. This review article explores the pathophysiology of COVID 19 infection and difference in response to the infection in adult and paediatric populations.
Guillainbarré Syndrome not responding to Remdesivir, Enoxaparin and High dose methylprednisolone in Patient with Covid 19 and eclampsia in Pregnancy: A case report.
Authors: Dibya Jyoti Sharma  , Aveenash Pawar  , Phulen Sarma  , Gaurav Muktesh
Published: March 2021

COVID-19 pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has protean manifestations. Nervous system involvement though uncommon in COVID-19 can present with debilitating manifestations like necrotising encephalopathy, myopathy, seizure, peripheral neuropathy and Guillain Barré syndrome. In this case report, we report a case of 27 years old woman who presented to us with post partum eclampsia and developed acute flaccid quadriparesis 5 days after COVID-19 infection which was manifested as cough, anosmia and ageusia without fever. Patient developed dyspnoea followed by type 2 respiratory failure 8 days after hospitalization for which she was put into mechanical ventilation. She was treated with high dose Methylprednisolone and standard medical therapy. IVIG or plasmapheresis could not be given due to non-availability. Patient expired in ICU after 18 days of hospital admission. SARS-COV-2 mainly infects the respiratory system of the body but it may have the neurotropic capacity and its ability to produce immune dysregulation can produce a cascade of inflammatory reactions in the nervous system. Guillain Barré syndrome is a heterogeneous disorder triggered by many viral infections and its development following COVID-19 infection can be attributed to the virus or immune response of the host against it. Possibility of COVID-19 infection triggering Guillain Barré syndrome cannot be ruled out. More studies regarding association of COVID-19 with the neurological disease may help in unraveling the neuro-invasion ability of the virus and to develop measures to prevent it.
ناڤونیشان د ڕۆمانێدا، ڕِۆمانا (داویا شەڕڤانەكى) یا نڤێسەر (عسمەت محەمەد بەدەل) وەكو نموونە
Authors: Arif Brendar Nazdar
Published: March 2021

ئەڤێ ڤەكولینێ هەوڵ دایە بابەتێ ناڤونیشانێ دەقێ ئەدەبى، ب ڕەنگەكێ تیورى بدەتە دیاركرن. پاشى ب ڕەنگەكێ پراكتیكى ناڤونیشانێ ڕۆمانا (داویا شەڕڤانەكى) شرۆڤە بكەت، چونكى ناڤونیشان وەكو ڕەگەزەكێ هونەرى دناڤ دەقێ ئەدەبى بگشتى و د ڕۆمانێدا بتایبەتى، كاریگەرییەك مەزن هەیە ل سەر ناڤگرتنا دەلالەتا ڤەشارتىیا دەقێ ڕۆمانێ، ڤەكۆلەر دێ شێت ب ڕێكا شرۆڤەكرنا ناڤونیشانێ ڕۆمانێ ئەوێ واتەیا ڤەشارتییا دناڤ دەقیدا هەى ئاشكەراكەت. مە د ئەڤێ ڤەكۆلینا ب ناڤونیشانێ ناڤونیشان د رۆمانێدا، رۆمانا (داویا شەڕڤانەكى) یا نڤێسەر (عسمەت محەمەد بەدەل) وەكو نموونە، بابەتێ ناڤونیشانى ژ لایێ تیورى دایە خویاكرن. باسێ زاراڤ و تێگەهـ و ئەرك و بنیات و جورێن ناڤونیشانى كرینە. پاشى ئەم چووینە سەر تەوەرێ پراكتیكىیێ ڤەكولینێ و مە ئەرك وهەردوو بنیاتێن كویر و سەرڤەیێ ناڤونیشانێ ڕۆمانێ شرۆڤەكرینە. بۆ مە دیاربوو كو ناڤونیشانێ ڕۆمانێ شیایە پرانییا دەقێڕۆمانێ بخوەڤە بگریت. دەلالەتا هەردوو بنیاتێن (كویر) و (سەرڤە) یێ ناڤونیشانێنڕۆمانێ شیاینە ببنە تەمامكەرێن ئێك و دەربڕینێ ژ خەبات و قوربانیدانا كەسایەتییا سەرەكییا ئەڤێ ڕۆمانێ بكەت كو (كوڤانە)
The Rise of Nationalism in China
Authors: Bai Limin
Published: March 2021

No description supplied
Raising China's Revolutionaries: Modernizing Childhood for Cosmopolitan Nationalists and Liberated Comrades, 1920s–1950s Margaret Mih Tillman New York: Columbia University Press, 2018 xx + 339 pp. $65.00; £50.00 ISBN 978-0-23118558-5
Authors: Bai Limin
Published: March 2021

No description supplied
Shaping the World of Scholars: the Soft Power of Emperor Kangxi (1661-1722)
Authors: Bai Limin
Published: March 2021

Modern scholarship has noted that the Kangxi emperor’s patronage of scholars is a form of “soft power” that assisted the Qing ruler during the Kangxi reign to achieve success in conquering the minds and hearts of Han Chinese, especially those eminent scholars who remained loyal to the fallen dynasty. This “soft power” emerged after the Kangxi government had decisively quelled the revolt of the Three Feudatories (San fan三藩) (1673-1681). In 1679 the boxue hongru博學鴻儒special examination signalled a significant moment in which the Kangxi emperor adopted a more diplomatic and personal approach to scholars under his rule. This paper examines several examples of scholars’ presenting (jin cheng 進呈）their scholarly works to the emperor/government. By analysing the Kangxi emperor’s tactics for fostering this particular scholarly phenomenon, this study reveals the key elements behind his successful use of soft power in shaping the intellectual milieu of the time.
Evaluation of heat tolerance potential in Capsicum annum L. genotypes under heat stress
Authors: Ali Mujahid , Lodhi Muhammad Imran , Ayyub Choudhary Muhammad , Hussain Zahoor , Mustafa Zaid , Ashraf Tehseen , Akram Bilal , Ayyub Saqib
Published: March 2021

Summer vegetables are severely affected by high temperature above threshold level which ultimately results in serious losses of their production. To cope with these economic losses different strategies had been adopted. The present study was designed to screen out heat tolerant genotypes of bell pepper. For this purpose, experiment was conducted in plant growth room in Institute of Horticultural Sciences, University of Agriculture Faisalabad. Ten genotypes of bell pepper (C1G3, C3G5, C7G4, V6G4, C2-E, C5G4, C43-D, C4G3, C43-A, C2G3) were brought from Ayub Agriculture Research Institute Faisalabad (AARI) and were grown. Heat treatment up to 40 ̊C was given. Data regarding agronomic traits (number of leaves, root length, shoot length, seedling dry weight, seedling fresh weight, electrolyte leakage) and physiological (Stomatal conductance, photosynthetic rate, transpiration rate and water use efficiency) was collected. Proper statistical designs were used to analyze the data. The research findings proved that heat stress significantly affected physiology, morphology and mechanisms of screened genotypes which followed the order for the heat stress as C5G4, C1G3, C2G3, C43-A, C3G5, C43-D, V6G4, C4G3, C43-A and C2G3, respectively. The collective effects of all these changes under high temperature stress resulted in poor plant growth and productivity. On the basis of physical and physiological parameters, genotypes C5G4, C1G3 and C43-A were among the most tolerant group and the most resistant genotypes.
Kırşehir İlinden Toplanan Morchella esculenta (L.) Pers (Kuzu Göbeği) Mantarlarının Moleküler Karakterizasyonu ve Antimikrobiyal Aktivitelerinin Belirlenmesi
Authors: Sevim Elif , Sevim Ali
Published: March 2021

Doğal yenilebilir mantarların Dünya’nın birçok ülkesinde geleneksel anlamda besin ve ilaç olarak kullanılıldığı uzun zamandan beri bilinen bir konudur. Morchella esculenta (L.) Pers (kuzu göbeği) tıbbi kullanım ve besin değeri açısından son derece değerli bulunmaktadır. Günümüze kadar yapılan birçok bilimsel çalışmaya göre makro fungusların antiviral, antibakteriyal, antiprotozoal ve antifungalözellik gösteren çeşitli kimyasal bileşiklere sahip olduğu bilinmektedir. Bu çalışmada Kırşehir ili ve ilçelerinden toplanan Kuzu Göbeği mantarlarının 18S rRNA ve ITS gen bölgeleri çoğaltılarak moleküler olarak tanımlamaları gerçekleştirilmiştir. Ayrıca, bu mantarlarının etanol, metanol ve sulu ekstraklarının antimikrobiyal etkileri çeşitli mikroorganizmalar üzerinde agar kuyucuk yöntemi ile araştırılmıştır. Son olarak, etkili bulunan ekstraktların Minimal İnhibisyon Konsantrasyon (MIC, MIK) değerleri Broth Dilüsyon metodu kullanılarak belirlenmiştir. Yapılan çalışmalar sonucunda en etkili ekstraktın etanol ekstraktı olduğu ve Pseudomonas aeruginosa ATCC43288 üzerine oldukça etkili olduğu tespit edilmiştir. Aynı zamanda etanol ve metanol ekstraktlarının Candida albicans ATCC60193 üzerinde de etkili olduğubelirlenmiştir. Elde edilen verilere göre, Kırşehir ilinden toplanan Morchella esculenta mantarının etanol ve metanol ekstraktlarının gram pozitif, gram negatif ve mayalara karşı etkili olduğu tespit edilmiştir. Sonuç olarak, M. esculenta mantarının antibakteriyel ve antifungal potansiyeli bakımından dikkate değer olduğu görülmektedir.
Benchtop 1H NMR spectroscopy as a practical tool for characterization of chemically ex-changing systems in Ascorbic acid
Authors: Cikrikci Sevil
Published: March 2021

Nuclear magnetic resonance (NMR) spectra and its action on characterization of pH dependent systems are among the most useful tools in spectroscopic techniques. Nevertheless, practical considerations often limit the application of High field NMR owing to its huge dimensions, expense and time-consuming property. On the other hand, benchtop devices could be another option with portable function and permanent magnet mechanism (1–2 T) but with several disadvantages such as reduced sensitivity and low resolution. In this study, proton exchange rates depending on pH of a selected molecule, were monitored by both 800 MHz High-Field and 60 MHz Bench-top H1 NMR to be compared. L-Ascorbic acid (AA) which is an important substrate for body and biological reac-tions was chosen as a target model molecule. This study supported the use of NMR for pH dependent chemical changes due to protonation. According to spectrum results and previous literature studies, shifting behaviour of Peak 1 (assigned to C4-H13) towards lower frequencies upon pH increase, gave us its feasibility for pKa determi-nation. While High-field NMR spectroscopy demonstrated the compositional analysis of AA and proton exchanges showing couplings between protons, Benchtop NMR was displayed as a limited tool owing to broadened lines of splitting peaks. Even so, shifting tendency of Peak 1 was still obtained quantitatively and promoted the feasibility of Benchtop NMR for characterization of a model molecule which was L-ascorbic acid. In brief, this study sup-ported the effect of magnetic field strength on characterization of pH dependent chemical exchange regimes for vitamins.
Bazı İnstant Gıdaların Üretiminde Kızılötesi Kurutmanın Etkisi
Authors: Albayrak Barış Burak , Tuncel Necati Barış , Kocabıyık Habib
Published: March 2021

Gıda endüstrisi ve tüketiciler sürekli yeniliğe ve daha kaliteli ürüne ihtiyaç duymaktadır. Yalnızca sıcak su ilavesi ile kolay bir şekilde tüketime hazır hale gelen instant gıdalar, zaman tasarrufu açısından son zamanlarda popülerlik kazanmıştır. İnstant gıdalar, genellikle önce pişirilip daha sonra geleneksel kurutma yöntemi ile kurutularak üretilmektedir. Bu çalışmada, geleneksel kurutma yöntemlerine alternatif olarak infrared teknolojisi kullanılarak fasulye, bulgur, kahverengi ve beyaz pirinçten instant ürün üretilmesi ve bazı özelliklerinin araştırılması amaçlanmıştır. Bu amaçla, ürünler pişirilmiş ve farklı güçlerde (300, 400, 500 W) orta dalga infrared emitter ile kurutulmuştur. Kurutulmuş ürünlerde kuruma süresi, su aktivitesi, hidroksimetilfurfural (HMF) miktarı, renk, tekstür ve rehidrasyon yeteneği ölçülerek infrared kurutmanın ürünlere olan etkisi araştırılmıştır. IR emitter gücünün artmasıyla kuruma sürelerinin beklenen şekilde azaldığı ve kuruma sonrası tüm örneklerin muhafaza açısından güvenli su aktivitelerine (0.29- 0.49) ulaştığı belirlenmiştir. Uygulanan işlemler sonucu kahverengi ve beyaz pirinçte HMF oluşumu görülmemekle birlikte bulgur ve fasulye örnekleri için HMF oluşumunda kuruma süresinin etkili olduğu saptanmıştır (p< 0.05). Bununla birlikte yüksek rehidrasyon yetenekleri sergileyen örneklerin sertlik değerlerinin daha az olduğu gözlenmiştir. Ayrıca, bulgur ve fasulye örneklerinin rehidrasyon yetenekleri infrared emitter güçlerinden etkilenmemiştir (p> 0.05). Sonuç olarak, piyasadaki instant gıda yelpazesine yeni ürünler ekleme ve instant gıda üretiminde infrared kurutmanın kullanılabilme potansiyeli ortaya konmuştur.
The Use of Graph Databases for Artificial Neural Networks
Authors: Özdemir Doğa Barış , Kınacı Ahmet Cumhur
Published: March 2021

Storing and using trained artificial neural network (ANN) models face technical difficulties. These models are usually stored as files and cannot be run directly. An artificial neural network can be structurally expressed as a graph. Therefore, it would be much more useful to store ANN models in a database and use the graph database as this database system. In this study, training and testing stages of ANN models are provided with software that will allow multiple researchers to conduct joint research on ANN models. The developed software platform is aimed to increase the representation power of the currently used methods by transferring the models developed in the popular ANN frameworks used today. With the study conducted, even someone who has started learning artificial neural network models from scratch will see the process and can visually develop their own model. When models are stored in the graph database, it will be easier to making versions and observing how the model grows. In addition, data to be input and output to the model can be stored in this database, also. In order to feed ANN models with input data and produce outputs, the graph database's own query language was used. This eliminates the dependency on another software library.
Representaciones sociales y las actitudes
Authors: Alemán Aguilar Carolina Guadalupe , Victorino Ramírez Liberio
Published: March 2021

El objetivo de esta investigación es posesionar la Teoría de las Representaciones Sociales (RS) como el marco adecuado para el estudio de las actitudes, especialmente de las actitudes de los alumnos de educación superior, hacia el aprendizaje de una segunda lengua, que se encuentra entre las competencias que los alumnos requieren para afrontar la comunicación a nivel global y el intercambio comercial. Las demandas del mundo globalizado ponen a las instituciones de educación superior (IES) ante la situación de desarrollar en los alumnos las competencias, capacidades y habilidades que requieren para asumir los retos que se les presenten a lo largo de su vida laboral y la necesidad de continuar aprendiendo y desarrollando nuevas competencias. Esta visión es compartida por gobiernos, universidades, profesores y alumnos, lo que implica optimizar la interacción y retroalimentación entre los sectores productivos, las IES y la sociedad en general. De ahí la necesidad de tomar en cuenta sus representaciones sociales como parte de este complejo proceso social, y así apoyar a las IES a cumplir con la demanda por la innovación de sus procesos académicos.
Desarrollo de habilidades con el uso de instrumentos tecnológicos y la variación
Authors: Gutiérrez Salce Jemima de Eden , Reséndiz Balderas Evelia
Published: March 2021

Este trabajo se llevó a cabo en Ciudad Victoria, Tamaulipas, México. El objetivo consistió en desarrollar habilidades en los estudiantes de 1° de secundaria, a través de instrumentos tecnológicos, para interpretar la variación de situaciones de movimiento, graficarlas y aplicarlo a contextos de la vida cotidiana. Para ello se realizó un cuadernillo de actividades donde estudiantes debían interpretar y graficar situaciones de movimiento, apoyándose con el uso de imágenes con animación de movimiento y el uso de un sensor de movimiento que graficaba en pantalla. Los resultados de este trabajo fueron favorables logrando en cierta medida el objetivo planteado.
The Contributions of Extracorporeal Shockwave Therapy to the Improvement of the Quality of Life in Patients with Scapulohumeral Periarthritis
Authors: Dobreci Daniel-Lucian , Șlicaru Adina Camelia
Published: March 2021

The main purpose of this study was to evaluate to what extent shock wave therapy (ESWT) can influence the quality of life of patients with scapular-humeral periarthritis (PSH). The study included 30 male and female PSH sufferers who had previously undergone various therapies without any success in disease progression. The VAS scale, the Roles-Maudsley score, and the Flanagan Life Quality Scale with seven points on the rating scale recommended by Andrews and Crandall were used to evaluate patient evolution. ESWT sessions were held on a seven-day session for 12 weeks. Between ESWT meetings each patient followed a home medical gymnastics program. Following the study, ESWT treatment had a good effect on the progression of PSH patients in terms of pain reduction and disappearance, as well as regaining mobility of the affected shoulder. The conclusion of this studio is that shock wave therapy can help improve the quality of life of PSH patients.
Reflexiones acerca de la censura en el periodismo mexicano y su manifestación en la experiencia de los comunicadores locales
Authors: Ramos Rojas Diego Noel , Navarro López Martín
Published: March 2021

El presente trabajo tiene por objeto analizar la manifestación de la censura desde el punto de vista de los periodistas locales que laboran en el estado de Jalisco, México. Para efectos de planteamiento y justificación, la investigación problematiza los recientes indicadores de violencia registrados en contra de comunicadores a nivel nacional, algunos casos de censura que han sido mediatizados y cuestiona lo que falta por hacer en materia de derechos humanos y el resultado de las reformas en materia de libertad de expresión y mecanismos de protección a periodistas. Se identificaron las diversas formas de concebir la censura a partir de su tipología. Bajo un enfoque cuantitativo se encuestaron a periodistas locales sobre su experiencia ante la censura y los hallazgos sugieren que este tipo de factores que limitan el libre flujo de ideas van más allá de lo meramente económico y legal. La censura resulta una práctica histórica que nunca se ha ido, únicamente ha cambiado sus formas de operar.
Regímenes de historicidad y la presencia de los medios de comunicación en la ciudad de León. Cine, música y lo juvenil.
Authors: Gomez Hector
Published: March 2021

Las películas sobre jóvenes que aparecieron durante la década de los cincuenta coinciden con un cambio en la producción de cultura de la modernidad. La presencia de una cultura de masas internacional no solamente manifestaba cambios importantes en la vida en las ciudades, sino en las formas de ser joven. A partir de entonces, ser joven era una forma de ser un sujeto moderno y la acción de los medios de comunicación era una de las pautas más importantes para lograrlo. El presente trabajo aborda el contexto del cine sobre jóvenes entre los cincuenta y los sesenta, y muestra como lo juvenil emerge como una experiencia de los jóvenes en la ciudad de León, Guanajuato, y como una de las vías para ser público de cine en la ciudad.
Ciudad, espacio urbano y comunicación. Prácticas y hábitos en la reinvención de una conurbación
Authors: Aguirre Aguilar Genaro
Published: March 2021

La transformación observada en las ciudades puede ser comprendida y explicada a partir de variables que van de lo cultural, lo social y lo educativo hasta las tecnologías de la información y la comunicación (TIC). En este contexto, la investigación Mapas y expresiones de la diversidad en Veracruz y su zona conurbada, exploró las prácticas y hábitos culturales que definen los nuevos usos del espacio urbano en la una conurbación veracruzana. El artículo aquí presentado se enfoca en la apropiación y uso que, de ciertos espacios urbanos, realizan algunos grupos sociales que habitan en la conurbación Veracruz, Boca del Río y Medellín.
De merodeadores a oyentes: Introducción del concepto de escucha en línea en los estudios de comunicación política
Authors: Galarza Molina Rocío
Published: March 2021

Este ensayo argumenta que la práctica de leer las discusiones, comentarios o tuits de otros —referida como “online listening”—es significativa para quien la lleva a cabo como una actividad por sí misma, y como parte de la interacción entre hablante y oyente. Por tanto, el valor democrático del Internet y redes sociales no está limitado a la oportunidad de expresión individual o colectiva, sino que también deriva de las posibilidades de practicar “online listening”, tanto parala comunicación con élites políticas como para las interacciones entre ciudadanos. Lainvestigación en el campo de la comunicación política se beneficiaría de introducir este conceptopara tener un mejor discernimiento de cómo los procesos de comunicación digital han alteradocómo los humanos adquieren información, cómo consolidan sus opiniones y son expuestos a otrasperspectivas, y cómo pueden mejorar su tolerancia hacia otros.
Fenómenos naturales y desastres humanos en la prensa impresa de México. De la información a la representación social.
Authors: Andrade del Cid Patricia , Flores González Rubén , Mendoza Muñiz Flor de María
Published: March 2021

La prensa mundial concede poca importancia a los temas medioambientales, salvo en los casos en que se producen desastres humanos relacionados con fenómenos naturales. Es por ello que se hace necesario conocer cuáles son las representaciones mediadas por la prensa mexicana de estos acontecimientos. Con el objetivo de caracterizar las representaciones sociales de la prensa impresa mexicana sobre el referente fenómenos naturales y desastres humanos, a partir de  ciertas cualidades del discurso informativo, se realizó un análisis de contenido de 1638 notas en 21 diarios de 9 estados de la República. Se observó la predominancia de notas básicas emitidas por fuentes oficiales. También se encontraron diferencias por estados en cuanto al grado de espectacularización o escabrosidad de la noticia. Se presume que la dominancia de fuentes oficiales tiene que ver con el ejercicio de rutinas periodísticas orientadas a economizar los recursos humanos y materiales de los medios. Por último, se argumenta que las diferencias entre estados respecto a la escabrosidad de las noticias dependen de la cultura de la región, y de la representación social de los fenómenos naturales que es característica de dicha cultura.
Modernización asincrónica de la prensa mexicana. Una comparación centro-periferia
Authors: González Macías Rubén , Echeverría Martín
Published: March 2021

Después de setenta años de una hegemonía casi total, en 2000 el Partido Revolucionario Institucional perdió la presidencia de la República ante el opositor Partido Acción Nacional. Ese momento fue considerado el sello distintivo de la transición política que comenzó en ciertas regiones hace dos décadas. De acuerdo con un grupo de académicos estadounidenses, la transformación del sistema político implicó también la modernización del sistema de medios, ya que la prensa mexicana en su conjunto avanzaba hacia su profesionalización. Sin embargo, diversos estudios de caso centrados en regiones específicas han encontrado evidencia empírica que demuestra lo contrario: que el periodismo local y regional sigue estando determinado por las costumbres del modelo autoritario. Con base en un análisis de contenido de la cobertura de las elecciones parlamentarias de 2015 en los periódicos nacionales y estatales, encontramos que aunque los medios nacionales mostraron un desempeño más profesional que los ubicados en otras regiones, ambos grupos compartían un sesgo político similar y una cobertura limitada de esas elecciones. Por lo tanto, la conclusión principal es que en lugar de una transformación o estancamiento general, la prensa mexicana desarrolla un proceso de modernización asincrónico en el que conviven simultáneamente rasgos liberales y autoritarios.
Pool Boiling Heat Transfer Properties of Water-Based Dilute Fe+ZnO Hybrid Nanofluid under Low Heat Flux Condition: A Numerical Study
Authors: ÇİFTÇİ Erdem
Published: March 2021

Thermophysical properties of the working fluid of a fluid-driven heat transfer system is the key parameter in determination of heat transfer performance of the system they were used. The nanofluids, nanoparticles containing colloidal suspensions, have been extensively used for performance enhancement in many applications, however, the nanoparticles cannot have both high thermal conductivity and good stability simultaneously. To provide these characteristics together, hybrid utilization of nanoparticles has emerged. In this numerical study, pool boiling heat transfer characteristics of dilute Fe+ZnO/deionized water hybrid nanofluid were investigated under low heat flux condition. The hybrid nanofluid suspension at the volumetric rate of 0.5% and Fe+ZnO combination of (50:50) were taken into account. For numerical simulations, Computational Fluid Dynamics approach and Volume-of-Fluid multiphase model were employed. Vapor volume fractions and velocity vectors in fluid medium were obtained for deionized water, and the hybrid nanofluid aforementioned. The start-up of the bubbles and departures with time were investigated for each working fluid. Under the same conditions, the start-up time of the boiling for deionized water and dilute hybrid nanofluid were observed as 468. and 441. seconds, respectively. The numerical findings also displayed that hybrid nanofluids can be used for pool boiling implementations in order to provide improved heat transfer characteristics.
نرجسيةُ الريادة ولِجامُ الإسلام: صورتان متضادَّتان عن الكُرْد والسودان والأمازيغ في التراث العربي
Authors: الشنقيطي محمد المختار
Published: March 2021

تتناول هذه الدراسة صورة كلٍّ من الكرد والسودان والأمازيغ في التراث العربي، وهي شعوب تشترك مع العرب في تجربة حضارية واحدة، وترتبط بهم بوشائج الدين والتاريخ والجغرافيا. تحلِّل الدراسة نماذج مما ورد عن هذه الشعوب الثلاثة في كتب المؤرخين والجغرافيين والرحالة والأدباء العرب، وتذهب إلى أن صورة هذه الشعوب في التراث العربي ليست صورة واحدة، بل هما صورتان متضادَّتان، تتضمَّن إحداهما مدحًا وتفهُّمًا وتعاطفًا، والأخرى قدحًا وتحيُّزًا وتحامُلًا. وتفسِّر الدراسة هذا التضادَّ بالصراع بين عاملين متناقضين: أولهما نرجسية الرِّيادة التي نمت في نفوس العرب حين تصدَّروا الحضارة الإسلامية عسكريًا وسياسيًّا عدة قرون، وهذه النرجسية ظاهرةٌ شائعة في كل الأمم التي تصدَّرت مسرحَ التاريخ البشري. وثانيهما لِجامُ الإسلام الذي ألجمَ العرب، وألزمهم بقيم العدل والمساواة بين البشر، ونهاهم عن الاستعلاء العرقي والتمييز العنصري. كما تشير الدراسة إلى بقايا من المواريث العربية والفارسية واليهودية-المسيحية السابقة على الإسلام، وما كان لها من أثر في رؤية العرب المسلمين لهذه الأقوام الثلاثة.
كيف تفكر كأنثروبولوجي؟
Authors: جلال الدين عبد الله أحمد
Published: March 2021

صدر عن الشبكة العربية للأبحاث والنشر في بيروت مطلع عام 2020 النسخة العربية من كتاب ماثيو أنجيلكه (Matthew E. Engelke) الموسوم بـ كيف تُفكّر كأنثروبولوجي Think Like an Anthropologist، ويتكون من تسعة فصول، تناقش المفاهيم الكلاسيكية في الأنثروبولوجيا، مثل: الثقافة، والحضارة، والقيم، والقيمة، والدم، والهوية والسلطة ... إلخ، في 304 صفحات. ولا يهدف الكتاب إلى تقديم تاريخ مفصل عن الأنثروبولوجيا، فيقول أنجيلكه "سأحاول إلقاء الضوء، وكلما سنحت الفرصة على بعض الشخصيات والمسارات والاتجاهات الرئيسية، ذلك أن قصة ظهور الأنثروبولوجيا وتطورُّها يمكنها أن تخبرنا بأشياء مهمة عن التخصصات الأكاديمية الحديثة بشكل عام، كما أن الإحاطة ببعض خلفيات هذا العلم ستكون مفيدة بالنظر إلى الاهتمام الذي سنوليه هنا لمجالات فرعية في كل من الأنثروبولوجيا الاجتماعية والثقافية".
Detection of Colistin Resistance in Mannheimia haemolytica & Pasteurella multocida Isolates from Ruminants in Morocco
Authors: Sebbar G
Published: March 2021

Colistin is an important drug of last resort against lethal infections with multidrugresistant gram-negative bacteria, this antibiotic interacts on phosphate groups of lipopolysaccharides present on the outer membrane of gram-negative bacteria. This first mechanism of transferable colistin resistance involves a gene called mcr-1. Here, we described different tools such as Colistin susceptibility test, Minimal Inhibitory Concentration to find the colistin profiles of Mannheimia haemolytica and Pasteurella multocida serogroup A Moroccan strain isolated from nasal swabs and lung taken from sheep, goat and cattle with respiratory diseases during January 2015 to December 2017 in six different regions, in addition, we investigated either real time PCR to detect mcr-1 gene. Antimicrobial sensitivity test, was achieved for Fortyone isolates, the resistance rates of isolates from Pasteurellaceae species were between 59 and 71%, which respectively correspond to Mannheimia haemolytica and Pasteurella multocida segroup A. The sensitive ratios were between 29 and 41% which respectively correspond to Pasteurella multocida segroup A and Mannheimia haemolytica. Also, the MIC test was done against colistin, the results showed a resistant profile with a MIC >=64 μg/ml except for 3 strains from ruminants which have a value <2 μg/ml. The real time PCR screening test was detected with ct values ranging from 23 to 31 and confirmed the results obtained by MIC test. To our knowledge the present study is the first study which reports the resistance to colistin in Pasteurellaceae species strains isolated from ruminants in Morocco, our results suggest the necessity and the urgency for establishing a national program for monitoring antibacterial resistance against colistin
Biological Characterization of Locally Circulating Mycoplasma gallisepticum in Poultry
Authors: Farooq Saba
Published: March 2021

Mycoplasma gallisepticum (MG) is a pathogen of concern for poultry. Present study was conducted to determine the biological characteristics of a field isolate of MG, recovered from an MG-affected flock. This isolation was made through conventional method of MG cultivation, using modified Frey’s media after confirming the isolate by polymerase chain reaction (PCR). A total of 48 birds were segregated into experimental group (32 birds) and the control group (16 birds). To appraise primary site of infection, MG broth propagated culture containing 1x106 CFU/ml was inoculated intratracheally to each bird in the experimental group, whereas the control group was sham inoculated by uninoculated broth. The clinical signs and symptoms were recorded daily from day 1 to 21 post-infection (p.i.). Seroconversion monitoring was carried out, at day 5, 10, 15, 20 p.i. by Serum Plate Agglutination test (SPA) and Enzyme Linked Immunosorbent Assay (ELISA). To determine the dissemination pattern of MG, birds were sacrificed according to plan, swabbed from various organs and subjected to MG-specific PCR. Tracheal lesions and air sac lesions were scored after necropsy. Clinically, mild signs of respiratory discomfort were observed on day 5 p.i., which intensified on day 9 to 21 p.i. in the experimental group. PCR of tracheal swab samples was positive from day 7 to 21 p.i., and the swabs collected from lungs were positive for MG from day 9 to 21 p.i. The study concluded that, MG isolate from field showed limited dissemination pattern and is restricted to respiratory tract.
The Ameliorative Effects of L-Carnitine against Cisplatin-Induced Gonadal Toxicity in Rats
Authors: Sallam Adham Omar
Published: March 2021

Cisplatin (CP) is a highly efficient remedy in cancer treatment, but it adversely affects the testicular tissue. This work assessed the ameliorative efficacy of Lcarnitine (LC) against CP induced oxidative stress in rat testis, via investigating testosterone level and tissue oxidative/antioxidant parameters, histological alterations, and immunohistochemical expressions of intermediate filaments (IFs) proteins; vimentin (VIM) and cytokeratin 18 (CK18). Twenty-eight rats were assigned into four groups (7 rats each) as follows; groups I and II received saline and LC (100 mg/kg b.wt.) respectively orally once daily for 30 days; group III were injected with a single dose of CP (7.5 mg/kg, IP), 27 days after starting the experiment. Group IV received both LC and CP. Injection of CP significantly decreased serum testosterone and glutathione reductase and catalase in the testicular tissues and elevated malondialdehyde. Histologically, testes of the CP treated group revealed marked degenerative changes. Also, overexpression of both VIM and CK18 in testicular tissues were recorded. However, the administration of LC with CP restored the biochemical parameters, histological and immunohistochemical pictures towards the normalcy. Accordingly, LC is recommended as a supplement with chemotherapy to ameliorate its oxidative stress. This is the first study investigating the immunohistochemical expressions of IFs proteins, VIM and CK18, following administration of LC as a protective agent against CP induced testicular toxicity in rats
Ameliorative Effects of Cholestyramine and Oxihumate on Aflatoxicosis in Broiler Chickens
Authors: A Ali Abdel Moneim
Published: March 2021

Aflatoxin B1 (AFB1) is widely available mycotoxin that is secreted by certain types of Aspergilli. In this research the ameliorative efficacy of two mycotoxin binders in broilers was evaluated; cholestyramine which was used for the first time in the poultry and oxihumate. A total of 64 one-day-old chicks were divided into four equal groups: birds of group A, B & C were fed on AFB1 contaminated diet at a rate of 2 ppm for 36 days either alone, with cholestyramine at a dose rate of 340µg/kg ration or with oxihumate at a dose rate of 3.5g/kg ration. Group D was kept as control with basal diet of neither toxin nor drug treatment. Morality was highest and the lesions of AFB1 intoxication were pronounced among birds of group A with marked degenerative and necrotic changes in different examined organs. Variable degrees of ameliorative effects of AFB-induced toxic lesions were observed in both treated groups (group B & C) with beneficial effects for cholestyramine. Mild expression of the apoptosis-related marker (p53) was encountered in group B and C relative to AFB1 intoxicated group. Aflatoxin residues were significantly reduced in the bird liver and kidney tissues in the instance of the two antimycotoxin binders. It could be concluded that both cholestyramine and oxihumate have an ameliorative effect for controlling aflatoxicosis with the superiority of cholestyramine in its protective effect. This the first in vivo trail to use cholestyramine as anti-AFB1 agent in poultry
Computed Tomography in Polytraumatized Patients: A Retrospective Study of 63 Cases (2014-2017)
Authors: Serra F
Published: March 2021

This study aimed to identify the regions and lesions most frequently reported in polytraumatized dogs and cats undergoing computed tomography. Research was carried out in the database of three Veterinary Referral Centers, to identify traumatized dogs and cats undergoing computed tomography from 2014 to 2017. Following were collected for each patient: gender, weight, type of study carried out and injuries reported. Lesions were classified according to the region involved: head, spine, chest, abdomen, pelvis, and appendicular skeleton. Thirty-seven studies involving cats and 26 involving dogs were included. Cats mainly presented lesions that involved both the skull and the chest simultaneously. Dogs presented lesions that affected the chest, abdomen and vertebral column simultaneously. In cats, the skull was more affected than in dogs (P<0.001). Of the cranial bone structures, more lesions were reported of the mandible and maxilla in cats (43%), and dogs were more affected by thoracic trauma (P<0.0011), by lesions of the vertebral column (P<0.008) and abdominal trauma (P<0.012). The thoracic findings included pulmonary contusions (dogs 54%, cats 24%) and pneumothorax (dogs 38%, cats 11%). Computed tomography in polytraumatized dogs and cats allowed a proper evaluation of the lesions and reduced the time between diagnosis and treatment
Optimalisasi Pemanfaatan Limbah Rumah Tangga sebagai Bahan Pupuk Organik Cair untuk Menumbuhkan Sikap dan Perilaku Peduli Lingkungan pada Siswa MTs. Haudhul Ulum Gegutu Telaga
Authors: Lestari Ayudya , Robbia Annisa Zikri , Patech Lalu Raftha , Syukur Abdul
Published: March 2021

Aktivitas rumah tangga yang tidak dikelola dengan bijak dan berakhir di tempat pembuangan sampah sering kali menimbulkan dampak terhadap beberapa aspek kehidupan, diantaranya aspek kesehatan, aspek lingkungan, dan aspek estetika. Sikap dan kepedulian masyarakat terhadap sampah menjadi perhatian dan tanggung jawab setiap lapisan masyarakat dalam menjaga dan melestarikan lingkungan alam sekitar. Tujuan pengabdian ini salah satunya adalah mengenalkan pemanfaatan sampah yang mudah dan dapat dilakukan oleh masyarakat dan siswa sekolah MTs Haudhul Ulum Gegutu Telaga yang menjadi target luaran dengan cara fermentasi karena teknologi yang digunakan sangat sederhana dan biaya penanganan yang murah yaitu pengolahan limbah rumah tangga untuk menghasilkan Mikroorganisme Lokal (MOL) menjadi Pupuk Organik Cair (POC) dari limbah Nasi (Oryza sativa). Adapun metode yang digunakan dalam pelaksanaan kegiatan pengabdian yaitu sosialisasi, pelatihan, dan penilaian sikap dan perilaku peduli lingkungan. Pengabdian POC ini dapat menghasilkan Pupuk Organik Cair yang bagus sesuai dengan kriteria dan juga melalui kegiatan pengelolaan limbah rumah tangga menjadi POC, diketahui siswa/i MTs. Haudhul Ulum memiliki sikap peduli lingkungan yang baik (89,5%) dan perilaku peduli lingkungan yang cukup baik (72,9%). Dengan demikian, dapat disimpulkan bahwa dengan memberikan edukasi dan pelatihan kepada siswa mengenai cara mengolah sampah dengan bijak dapat menumbuhkan bahkan meningkatkan sikap dan perilaku peduli lingkungan.