bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis Of The Chemistry Book For The Third Grade Medium On The Skills Of The 21st Century
Authors: Et. al. Asst. Prof. Dr. susan duraid Ahmed 
Published: April 2021

: The current study aims to analyze the content of the chemistry book for the third middle grade according to the skills of the 21st century for the academic year (2020-2021).
To achieve this goal, a list of 21st century skills to be included in the chemistry book for the third grade was built after a series of literature, research and previous studies, as the 21st century skills tool was built with its main and sub-skills in its initial form consisted of (68) indicators distributed in three main groups and presented the list to a group of specialists in the field of curriculum and teaching methods, Thus the tool was formed in its final form of (59) sub-issue, and then analyzed the content of the chemistry book for the third grade intermediate in light of the tool skills of the 21st century and the analysis included three books in the reality (111) pages and adopted the explicit and implicit idea of a unit for recording and repetition, and the researcher found the sincerity of the analysis by presenting a random sample of analysis to a group of arbitrators and they agreed on the validity of the analysis Using the Holiste equation, stability was calculated in agreement with external analysts and with the researcher herself, and one of the most important findings of the researcher was that the chemistry book for the third grade average dissonance obtained a percentage (43.76%) By (658) repetitions In the light of the results of the research, the researcher came up with a number of recommendations, including:-:
1 -Attention to the principle of integration between the topics of books and include them what is modern.
2 -Training teachers in educational and educational practices that lead to the development of all skills and development among learners by employing educational experiences and attitudes to apply research and exploration behavior using the skills of the 21st century.
3 -The need to conduct educational courses and workshops for teachers to increase their awareness of the importance of 21st-century skills.
. The researcher suggested completing this study several proposals, including:-
1-Study sing the level of awareness of 21st-century skills among teachers, supervisors, and school principals.
2-Study on the obstacles of developing the skills of the 21st century and developing proposed solutions.
Efficacy of Different Treatment Modalities for Eye Cancer in Bovines
Authors: Lakshmi M. Prasanna , Veena P. , Kumar R.V. Suresh , Prameela D. Rani , Reddy K. Jagan Mohan 
Published: April 2021

Background: Bovine ocular squamous cell carcinoma also called cancer eye, represents the most economically important neoplasm in large animals. Hereditary factors, environmental factors (e.g: latitude, altitude, exposure to sunlight), lack of eyelid pigmentation, age and dietary habits have all been reported to play a role in the etiopathogenesis of bovine ocular squamous cell carcinoma. In addition, in cattle the etiology has been linked to a number of viral agents, especially bovine papilloma virus and bovine herpes virus type 1 and 5. Nevertheless, ultraviolet light, viruses and circumocular pigmentation are the major epidemiologic risk factors for the development of the tumor. The efficacy of different treatment modalities for eye cancer in bovines was studied. Methods: All the animals were divided in to four groups of six animals each. Surgical excision, intra lesion BCG vaccine, surgery with auto vaccine and surgery with mitomycin was the treatment protocols followed. Immunohistochemical studies were conducted to know the rate of proliferation of bovine ye cancer. Immunopositive reaction was observed against Vascular Endothelial Growth Factor and Epidermal Growth Factor Receptor in all the cases. Result: The benefits of different treatment modalities depended on nature, type, location and extensiveness of tumor. Early detection and aggressive treatment were essential in the successful management of these tumors. A multimodal treatment approach was recommended with surgery, immunotherapy and chemotherapy in providing 100% disease free interval.
COVID-19, diabetes y el sistema inmunológico
Authors: Moreno-González Janette G. , Siqueiros-Cendón Tania , Moreno-Brito Verónica , Licón Trillo Ángel , González-Rodríguez Everardo , Leal-Berumen Irene , Rascón Cruz Quintín 
Published: April 2021

En el año de 2019 en la provincia de Wuhan, China, se reportó un brote de neumonías atípicas, con síntomas similares a los del Síndrome Respiratorio Agudo Severo (SARS), brote reportado en el 2003, y al Síndrome Respiratorio del Oriente Medio (MERS), brote reportado en 2012 en Arabia Saudita. Esta enfermedad emergente fue causada por el nuevo coronavirus “Síndrome Respiratorio Agudo Severo Coronavirus 2” (SARS-CoV-2) o también denominada COVID-19 del inglés Coronavirus desease 2019, caracterizado por presentar severos problemas respiratorios y diversas manifestaciones extrapulmonares.
Al momento se ha reportado una elevada tasa de mortalidad en individuos del sexo masculino, en adultos mayores de 60 años, y en personas con comorbilidades como diabetes obesidad, hipertensión y problemas cardiacos. La diabetes es una enfermedad caracterizada por resistencia a insulina, pérdida de función de células β en el páncreas, y desbalance del sistema inmune por el estado de inflamación crónica. En pacientes graves con COVID-19, se ha observado una secreción alterada de citocinas pro inflamatorias, si esto ocurre en un paciente diabético, que ya tiene un estado inflamatorio per se, se induce inflamación exacerbada y una falla multiorgánica que puede desencadenar en la muerte de los pacientes. Diversos autores señalan como hipótesis que la hiperglicemia favorece la replicación viral, por lo que en un paciente “diabético con infección COVID-19”, es primordial mantener un control glicémico adecuado.
Los tratamientos para COVID-19 se han enfocado en disminuir los síntomas, el uso de antivirales, antiinflamatorios, anticuerpos monoclonales y plasma convaleciente COVID-19 ha mostrado resultados variables. Para el control de esta infección viral es necesaria una vacuna, al momento existen más de 150 candidatos, con una eficiencia que va del rango de 70 al 95%, pero aún falta determinar la inmunidad a largo plazo en las personas vacunadas. Esta revisión aborda las características de la infección por SARS-CoV2 y la respuesta inmunitaria en pacientes diabéticos frente a COVID-19.
Analysis of Genetic Parameters of Reproductive Traits in Conserved Breed Sows Raised in Poland
Authors: Eckert Robert , Szyndler-Nędza Magdalena , Szulc Karolina , Skrzypczak Ewa , Babicz Marek , Kropiwiec-Domańska Kinga , Hammermeister Anna 
Published: April 2021

Abstract
The aim of the study was to estimate the genetic parameters for reproductive performance in native breed sows covered by genetic resource conservation programmes in Poland. The study used data on reproductive performance of 1,182 Złotnicka White sows, 1,648 Złotnicka Spotted sows and 1,180 Puławska sows. The following traits were analysed: age at first farrowing, number of piglets born alive, number of piglets at 21 days of age and farrowing interval. Covariance components and genetic parameters were estimated using an REML animal model with different combinations of fixed and random effects. Convergence of the iterative process was achieved by the selection of the AIREML algorithm. The estimated values of the coefficients of heritability for the number of piglets born ranged from h2 = 0.09 in the Puławska breed to h2 = 0.30 in the Złotnicka White breed. For the number of piglets reared, they varied between h2 = 0.09 in the Złotnicka Spotted breed to h2 = 0.27 in the Puławska breed. The heritability values for age at first farrowing and farrowing interval were higher, and ranged from 0.4 to 0.5. The significant positive and negative coefficients of phenotypic correlation, estimated between age at first farrowing and farrowing interval with the number of piglets born alive and reared per litter, suggest that the native pig breeds should be bred in keeping with their breed predispositions.
Apparel Industry in the EU–China Exports and Circular Economy
Authors: Covaci Brîndușa 
Published: April 2021

Abstract
In the current social and economic world context, Chinese trade relations represent a challenge for all partners. The article provides an overview of bilateral trade, especially export, between the European Union (EU) and China in the apparel and accessories industry, most performance parts of the bilateral relations from the textile industry. The research is highlighting the major trends of export relations for this industry during 2001–2019. The author presents the evolution of articles of apparel and accessories exports in the EU and China, emphasizing the major tendencies for each of them. Further are developed benchmarks of Romanian contribution to the relationship between EU and China. The methods used present a multi-method approach, utilizing primary and secondary research through exploratory data from the official website regarding the apparel industry, as EU Statistics, International Trade Centre, and others. The main result of the paper shows that at the European level, one of the most important objectives for the apparel industry is to assure EU–China trade feasible barrier export instruments to develop efficiently the bilateral exports.
Effects of supplemental lighting using HPS and LED lamps with different light spectra on growth and yield of the cucumber (Cucumis sativus L.) during winter cultivation in greenhouse
Authors: Treder Jadwiga , Borkowska Anna , Treder Waldemar , Sikorska-Zimny Kalina 
Published: April 2021

Abstract
The aim of the experiment was to assess the effects of supplemental lighting of cucumber grown in greenhouse using lamps with differentiated light spectra: sodium lamps – high-pressure sodium (HPS) and light emitting diodes (LEDs). Plants (cucumber ‘Pacto’ F1) were grown in two greenhouse compartments with five light treatments: I – HPS + LED (top light with HPS LEDs as interlighting), II – only HPS as top light, III – LED R (LED chips on board (COB) type with an increased level of red band), IV – LED W (LED COB type, white), V – LED B (LED COB type with an increased level of blue spectrum). Light treatments: HPS + LEDs and HPS were grown in one greenhouse compartment and the other three light treatments: LED R (red light supplementation), LED W (without additional supplementation) and LED B (red spectrum supplementation) in the second compartment in analogous climatic conditions. The LED lamps using COB technology are known to be a very efficient source of light. Plants were cultivated from December 2018 to March 2019 in mineral wool slabs Grotop Master (100 × 15 × 10) with four plants on one mat. They were illuminated for 18 h (from 5 am to 11 pm), setting the threshold value (on and off) at 130 W. The plants were drip-irrigated with a complete nutrient solution. The irrigation was controlled based on a weighting system. The assessment of the effect of lighting on early yield and quality of cucumbers was completed after 8 weeks of cropping. It was shown that it was possible to obtain 3.59 kg from one plant during the 8-week period of evaluation by illuminating plants with sodium lamps (HPS), while using HPS and LEDs as additional illuminated inter-rows 3.89 kg. The yield of plants illuminated by LED lamps varied depending on the variant of the spectrum used and was respective for LED R, LED W and LED B, 3.30 kg, 3.90 kg and 3.25 kg. The obtained results indicated that the yield of cucumber ‘Pacto’ F1 grown with HPS lamps at top lighting and at the same time using interlighting with LED lamps was similar to LED W lamps (i.e. without additional supplementation in the range of red (LED R) and blue (LED B) light). Due to good results of LED lamps (type COB for top lighting or as interlighting) used for the cucumber supplemental lighting and high energy efficiency of LEDs, the promising future for that type of lamps compared with traditionally used HPS during winter cultivation in a greenhouse was demonstrated.
Assessing the Immediate Effect of Covid-19 Lockdown on Air Quality: A Case Study of Delhi, India
Authors: Sikarwar Ankit , Rani Ritu 
Published: April 2021

Abstract
In India, a nationwide lockdown due to COVID-19 has been implemented on 25 March 2020. The lockdown restrictions on more than 1.3 billion people have brought exceptional changes in the air quality all over the country. This study aims to analyze the levels of three major pollutants: particulate matter sized 2.5 μm (PM2.5) and 10 μm (PM10), and nitrogen dioxide (NO2) before and during the lockdown in Delhi, one of the world’s most polluted cities. The data for PM2.5, PM10, and NO2 concentrations are derived from 38 ground stations dispersed within the city. The spatial interpolation maps of pollutants for two times are generated using Inverse Distance Weighting (IDW) model. The results indicate decreasing levels of PM2.5, PM10, and NO2 concentrations in the city by 93%, 83%, and 70% from 25 February 2020 to 21 April 2020 respectively. It is found that one month before the lockdown the levels of air pollution in Delhi were critical and much higher than the guideline values set by the World Health Organization. The levels of air pollution became historically low after the lockdown. Considering the critically degraded air quality for decades and higher morbidity and mortality rate due to unhealthy air in Delhi, the improvement in air quality due to lockdown may result as a boon for the better health of the city’s population.
Ab-Initio Calculations of Oxygen Vacancy in Ga2O3 Crystals
Authors: Usseinov A. , Koishybayeva Zh. , Platonenko A. , Akilbekov A. , Purans J. , Pankratov V. , Suchikova Y. , Popov A. I. 
Published: April 2021

Abstract
Gallium oxide β-Ga2O3 is an important wide-band gap semiconductor. In this study, we have calculated the formation energy and transition levels of oxygen vacancies in β-Ga2O3 crystal using the B3LYP hybrid exchange-correlation functional within the LCAO-DFT approach. The obtained electronic charge redistribution in perfect Ga2O3 shows notable covalency of the Ga-O bonds. The formation of the neutral oxygen vacancy in β-Ga2O3 leads to the presence of deep donor defects with quite low concentration. This is a clear reason why oxygen vacancies can be hardly responsible for n-type conductivity in β-Ga2O3.
Investigation and optimization of friction stir welding process parameters of stir cast AA6082/ZrO2/B4C composites
Authors: Umar Mohamed J. , Palaniappan PL. K. , Maran P. , Pandiyarajan R. 
Published: April 2021

Abstract
In the present investigation, aluminium-based alloy (AA6082) is stir-casted with 3 % ZrO2 and 5 % B4C reinforcement particulates to fabricate Aluminium Metal Matrix Hybrid Composites (AMMHCs) which are further friction-stir welded at different welding conditions to develop a welded joint with optimum ultimate tensile strength (UTS) and microhardness. This newly developed AMMHC will find its specific application as bulkhead partitions in the hull of a ship due to its excellent properties, such as lower weight, higher specific strength, superior resistance to wear, and lower thermal expansion coefficient than that of AA6061 and AA5083 composites. The friction-welded butt joints performance of AA6082/3%ZrO2/5%B4C is generally determined by varying the FSW process parameters such as tool rotational speed (TRS), welding speed (WS), axial load (AL), tool tilt angle (TTA), tool pin profile (TPP), shoulder diameter (SD), etc. In the present work, the empirical relationships are established between parameters highly influencing FSW process (TRS, WS, and AL) and their responses (UTS and weld nugget microhardness (WNH)). The desirability approach is employed for predicting the optimal UTS and WNH. The corresponding values of input process parameters are TRS of 1030.95 rpm, WS of 38.5 mm/min, and AL of 5.88 kN. The calculated UTS and WNH for the present investigation are 239.98 MPa and 94.2 HV, respectively, and these values are consistent with the results of validation experiments.
Teaching Dance Spaciously
Authors: Østern Tone Pernille 
Published: April 2021

Abstract
This article focuses on and discusses the concept of space as a theoretical tool in connection with dance pedagogy. The author suggests that to look at the dance class as spacious contributes to the dance teacher’s awareness of the fact that she operates in, and also creates, many different spaces as she teaches. This awareness might support the teacher in broadening the dance space in order to embrace differences among dancers, thereby providing the word spacious with a second meaning: generous. The author’s interest in the concept of space as a theoretical device to help understand what goes on in a dance class was born during the analysis of the video material collected for her PhD in dance (Østern, 2009). The practical investigation of the study dealt with formulating an approach to dance pedagogy with a group of mixed-ability dancers based on an understanding of the meaning-making processes among the different dancers in the project. Dialoguing with scholars like Maurice Merleau-Ponty (1962/2002), Valerie Briginshaw (2001), Shaun Gallagher, Dan Zahavi (2008) and Leena Rouhiainen (2007), the author distinguished different spaces in the dance improvisation classes she was teaching, video recording and analysing. Through this process, she developed a theory on the fact that in a dance improvisation class with differently bodied dancers meaning was made in different ways, touching on and producing different spaces. The author concludes that one main advantage of regarding a dance class as spacious is that it allows for an understanding that in class meaning-making can happen in different ways, within different spaces. Together with the dancers, the dance teacher moves in and out of these spaces as she teaches.
Tone Pernille Østern (Doctor of Arts in dance) is a dance artist, teacher and researcher based in Trondheim, Norway. She is the artistic leader of the Inclusive Dance Company (www.dance-company.no) which is a small independent contemporary dance company. She has developed the Dance Laboratory (www.danselaboratoriet.no) which is a performing group with differently bodied dancers. The Dance Laboratory also formed the basis of her field work in relation to her PhD in Dance at the Theatre Academy in Helsinki (Østern, 2009). Østern is also the leader of the MultiPlié Dance and Diversity Festival, a biennial in Trondheim since 2004. The festival tries to stretch and discuss ideas about what dancing is and who can be a dancer. From 2009 she also takes up the position as assistant professor at the Program for Teacher Education at the NTNU University where she teaches and carries out research. E-mail: inclusive@dance-company.no / tone.pernille.ostern@plu.ntnu.no
Renaissance Humanist Reinterpretations of Eve; The Writings of Christine De Pizan and Isotta Nogarolla
Authors: Gibson Isobel 
Published: April 2021

The purpose of my research is to explore the ways that intellectuals reinterpreted Eve using the Humanistic method during the Renaissance, questioning the naturalized relationship between women and sin. Humanism, a growing movement during the 15th century, placed emphasis on ascertaining meaning through analyzing works for their intended meaning and considering the context, while also revering God and antiquity alongside attention to the individual. Christine De Pizan and Isotta Nogarola use the Humanistic method of analysis in different ways to argue that Eve, and womankind, do not deserve a devious reputation and it is not justified by God. I will use historical artworks and writings to show how Eve was depicted prior to and during Renaissance Humanism. For example, Michelangelo’s Sistine Chapel depiction of the Fall fundamentally differs from other previous works by redistributing the culpability of Adam and Eve; no longer is Eve a sensual being, nor entirely to blame for the Fall. Additionally, as is necessary with any historical analysis, I will examine the contextual factors that allowed for the reinterpretation of Eve, especially by women, including the ways that both were a product and yet also ahead of their time. Whether the reinterpretations are pro-feminine or not is irrelevant in many respects, for the significance stems from women taking back a piece of historiography of the prototype woman, Eve.
The accuracy of computer-aided design and manufacturing surgical-guide for infrazygomatic crest miniscrew placement
Authors: Jariyapongpaiboon Prajak , Chartpitak Jirawan , Jitsaard Jaturong 
Published: April 2021

Objectives:
Infrazygomatic crest (IZC) surgical guides have been employed to prevent any avoidable complications during miniscrew insertion. The purpose of this study was to evaluate the accuracy of IZC miniscrew placement when using a surgical-guide developed by computer-aided design and manufacturing (CAD/CAM) techniques.

Materials and Methods:
Ten patients were scanned with cone-beam computed tomography for three-dimensional (3D) planning of IZC miniscrew placements. The upper arches were scanned separately, and virtual miniscrews were placed in the position planned by 3D software. The CAD/CAM surgical guides were designed and fabricated individually to enable accurate miniscrew placement. Subsequently, 20 self-drilling miniscrews were inserted at the right and left IZC areas using 5 CAD/CAM surgical guides (CS group, n = 10) and direct insertion (DI group, n = 10), respectively. Pre- and post-operative digital model images were compared, actual and planned miniscrew positions were superimposed and measured for 3D angular and distance deviations in the two groups. Comparisons between groups were made using the Kruskal–Wallis test.

Results:
In the CS group, the median coronal and sagittal angular deviations were 2.95 degrees (range 0.34–5.26 degrees) and 2.05 degrees (range 0.38–4.08 degrees), respectively, while the median coronal and apical deviations were 0.39 mm (range 0.24–0.51 mm) and 0.50 mm (range 0.16–0.66 mm). These deviations differed significantly from those of the DI group.

Conclusion:
The IZC CAD/CAM surgical guide has made it possible to control miniscrew placement with high precision.