bluuebunny/crossref_metadata_2025 huggingface dataset:
Experimentation on enhancement of solar still performance
Authors: Issaq Sonia Z. , Talal Shamil K. , Azooz Aasim A.
Published: May 2023

This work presents new results from controlled experiments using well-designed and constructed single-inclination solar stills. The aim of these experiments is to explore methods for enhancing still performance by studying the individual effects of three types of methods. Specifically, the experiments investigate the actual effects of still basin water depth, the use of a sensible heat storage medium, and the treatment of the inner glass surface with waxy substances. The main distinction in this work is the use of solar stills that can achieve thermal efficiencies in excess of 40% under favourable weather conditions without any modification. This high efficiency level allows for meaningful analysis of the impact of modifications on still performance. The results indicate that still yield, productivity, and thermal efficiency decrease significantly when the water depth in the basin exceeds 6 cm. additionally, introducing black gravel in excess of a 2% gravel to water mass ratio in the still basin does not produce a significant change in still thermal efficiency. Treatment of the still inner glass surface with two types of waxy materials resulted in large drop in still performance.
ANALISIS NILAI KERUSAKAN DAN PRIORITAS PERBAIKAN JALAN PADA LAPISAN PERMUKAAN KAKU MENGGUNAKAN METODE PCI
Authors: Lenahatu Jermias Ravi , Anggreni Ida Ayu Ari
Published: May 2023

Road is an infrastructure in support of the economic rate and play a very big role in the progress and development of a region. With the increasing age of roads and roads continuously experiencing the stresses due to traffic loads borne from the initial conditions of the pavement design, the ability of road services will decrease further. Therefore, research is needed to identify road damage in 5 secondary arterial roads of Depok City, West Java. This study aims to determine the condition of roads and the determination of road maintenance priority in 5 secondary arterial roads Depok City. This research uses Pavement Condition Index method (PCI) which is used to know the condition of road and Analytical Hierarchy Process (AHP) method to determine the order of prirotas of road maintenance. The criteria used for decision making are budget, road condition, LHR, regional development and economy. Result of research by PCI method, from 5 road segment, it is found that the most damaged road is Jalan Merawan with PCI value is 23 (Serious). For the determination of road maintenance criteria by AHP method resulted in the criterion of road condition as the highest criterion with a weight of 0,505. From the assessment of each criteria on the 5 road segments found that Access UI access road becomes the first priority with the weight of 0.242.Keywords: AHP, Road Condition, PCI, Priority setting.
PENGARUH PENAMBAHAN DAN PERLAKUAN PENYIAPAN RECLAIMED ASPHALT PAVEMENT (RAP) TERHADAP KARAKTERISTIK
Authors: Suwarto Fardzanela , Setiadji Bagus Hario , Supriyono Supriyono
Published: May 2023

Abstract: The addition of the Reclaimed Asphalt Pavement (RAP) is done by stripping the asphalt mixture on the pavement structure and destroying it into a grained material. The percentage of RAP material addition and treatment of RAP material prior to use as a Job Mix Formula will affect the final result of the asphalt mixture so that the relationship between the asphalt mixture characteristics with the RAP material and the relationship between the asphalt mixture characteristics between the two treatments against RAP with or without the granulator need to be studied. The results of this study show that the addition of RAP material can improve the stability of the asphalt mixture, the optimal value of RAP material addition is between 20% and 30%. In addition, the use of RAP by granulisation process in aggregate mixtures can help to improve stability and mixed stiffness.Keyword: RAP, Asphalt mixture, granulator
AUDIT KESELAMATAN JALAN SEBAGAI DASAR IMPLEMENTASI PERENCANAAN KARAKTERISTIK JALAN
Authors: Suwarto Fardzanela , Nugroho Anjang
Published: May 2023

Peningkatan manajemen keselamatan infrastruktur jalan merupakan komponen kunci untuk peningkatan keselamatan jalan. Untuk meningkatkan keselamatan jalan, selama tahap operasi dan pemeliharaan, otoritas jalan harus menemukan dan memperbaiki masalah keselamatan yang menjadi penyebab kecelakaan jalan, untuk mencegah kembali terjadinya kecelakaan lalu lintas. Sehingga audit keselamatan jalan sangat dibutuhkan, sebagai suatu sistem yang melakukan kontrol kualitas (keselamatan) jalan. Penelitian ini bertujuan untuk melakukan kajian terhadap audit keselamatan jalan yang telah dilakukan pada berbagai lokasi dan melakukan penyimpulan terhadap rekomendasi audit keselamatan jalan dalam hal geometrik dan karakteristik jalan untuk dapat memberikan masukan pada tahapan perencanaan jalan baru di kemudian hari. Hasil dari studi ini adalah pada segmen jalan lurus perencanaan rambu peringatan dan batas kecepatan sangat diperlukan untuk menambah informasi kepada pengemudi. Terkait bagian tikungan dan tanjakan jalan, konsistensi dalam perencanaan radius tikungan mutlak diperlukan.  Selain itu khusus untuk daerah tanjakan, pada tikungan perlu dilengkapi marka garis lurus dan rambu batas kecepatan serta rambu dilarang menyiap untuk mengurangi kemungkinan terjadinya kecelakaan lalu lintas.
PERBAIKAN DEFORMASI PLAT BAJA PADA KONSTRUKSI BLOCK SS1A KAPAL CEPAT RUDAL 60M AKIBAT PROSES ASSEMBLY
Authors: Utomo Budi
Published: May 2023

Construction plate that has undergone various treatments will definitely deform. Deformation can be interpreted as a change in shape that occurs because of several factors, starting from load pressure, withdrawal, lifting, and welding. In ship building is a welding work that causes the most deformation due to the influence of large heat so that the plate expands and curves quickly. If the deformation is not handled, it will change the shape of the dimensions of the ship and also affect the process of joining erection. To overcome the problem of deformation, the Fairing is done, namely the heating process and cooling the plate in extreme. The fairing process is a method that is carried out to improve the tenacity and toughness of a plate after being coldly bent. Heat treatment is needed to help restore the plate to the specified shape. So that it can minimize the occurrence of dimensional changes and prevent repair when joining erections.
STUDI PERBANDINGAN ALTERNATIF PENINGGIAN ELEVASI JALAN DENGAN PENGGUNAAN BANGUNAN PROTEKSI PIPA TERHADAP BIAYA, MUTU DAN WAKTU
Authors: Fauziyah Shifa , Nurjihad C Fajar , Suwarto Fardzanela
Published: May 2023

One of the work items in the Soekarno-Hatta Airport Accessibility and Ducting Utility Project is widening the M1-M2 road. Pit test results in that area indicate that there is a 40 cm (16 ") diameter Pertamina pipeline at a depth of 0.7 m. The pipe is used to flow aircraft fuel so it is not possible to be relocated, this condition is called road crossing pipeline. Alternative solutions to overcome these problems are road elevation and the making of pipe protection from concrete. Road elevation costs as much as Rp 13,626,916,287.02 compared to alternative construction of pipeline protection amounting to Rp 23,200,588,370. The time for completing the elevation of the road is faster, which is around 47 weeks, while the implementation of the road and making pipeline protection takes 61 weeks. In terms of quality, in soil compaction during the road elevation process uses a vibroroller so that compaction is evenly distributed. Based on the comparative results in terms of cost, time and quality, the alternative solution to the problem road crossing pipeline is road elevation.
PENGARUH PENAMBAHAN LIMBAH PERUSAHAAN DAERAH CANGKANG ALE-ALE, CANGKANG KERNEL, DAN LEM PLYWOOD TERHADAP KUAT TEKAN BETON
Authors: ‘Ain Hurul
Published: May 2023

Ketapang regency is an area rich in marine natural resources and plantations. Ale – ale mussels are a potential marine natural resource whose capture produces negative impacts in the form of shell waste. And the natural resources of the plantations are oil palm which produces kernel shell waste and plywood wood companies which produce waste from machine glue. Where, these wastes have not been managed optimally. This is a challenge in research so that waste can be used as a mixture of concrete, has economic potential and reduces environmental impact. In this study, cylindrical samples with diameter (∅) 15 cm and height 30 cm. The percentage of waste is 30% of the weight of coarse aggregate. With a mixture ratio of 1 : 2 : 3 ( cement : fine aggregat, coarse aggregate ) with 3 samples from each type of waste to determine the compressive strength of 7, 14, and 28 days. The stages of implementation include the examination of material properties, sample making, weighing and the compressive strength test of the sample. The average compressive strength value of the 28-day age conversion obtained from the ale-ale shell waste test results was 177.64 kg / cm2, kernel shells amounted to 66.62 kg / cm2, and plywood glue amounted to 235.57 kg / cm2. Based on these data, plywood glue wastehas the highest compressive strength value.
Manajemen Pemeliharaan Rumah Kos dari Pihak Pemilik dan Pengelola: Survey
Authors: Karlina Monik
Published: May 2023

A survey was conducted of 12 boarding houses spread across Ciwaruga, West Bandung Regency to investigate their current maintenance practices and property management functions. This finding highlights the policies of boarding house managers and owners regarding boarding house management planning; the extent of planning for budgeting; how to promote boarding rooms; by what means the rent is collected; a good relationship with the tenant; boarding house operational costs incurred; and the use of preventive/routine/deferred/emergency maintenance. Owners and managers of boarding houses should be aware of the concerns of tenants and they should also make designers aware of these issues; Building performance is likely to be improved if boarding house owners and managers take action in the design and operation phases in response to tenants' concerns.
KAJIAN PERENCANAAN PEMBANGUNAN PASAR SAYANGAN SALATIGA
Authors: Nurdiana Asri , Setiabudi Bambang , Sutanto Sutanto
Published: May 2023

Pasar Sayangan adalah salah satu pasar tradisional berskala kecil yang terletak di Jl. Pattimura, Kecamatan Sidorejo Salatiga. Kondisi kios sudah tidak layak dipergunakan dan kondisi los pedagang perlu dilakukan penataan. Sarana pendukung seperti tempat sampah, sarana air bersih dan area parkir sangat kurang. Berdasarkan kondisi tersebut, maka Pasar Sayangan perlu dilakukan Revitalisasi yang bertujuan untuk meningkatkan kualitas pelayanan kepada pedagang dan pengunjung serta menciptakan lingkungan pasar yang bersih, sehat, aman dan nyaman. Bangunan Pasar Sayangan direncanakan 2 (dua) lantai. Lantai Satu terdiri Kios, Los, Kantor Pengelola, Gudang, MCK, Tempat Parkir dan Tempat Sampah. Sedangkan Lantai Dua terdiri Kios Makanan, Area Pengunjung, Kantor Pengelola, Mushola dan MCK
ANALYSIS TYPE OF ROAD DAMAGE IN THE NATIONAL ROAD TEUKU UMAR TUBAN
Authors: Mintiya Richo Ardidarmawan
Published: May 2023

The road is an object that can help humans in their lives. One example is that roads can be a link between one place and another, no wonder there are often road damages due to excessive vehicle loads. To overcome it all, it is necessary to have an accurate maintenance to make the road can be used according to the age of the plan. One of the roads that suffered damage wasTeuku Umar Road Tuban, where on this road there were several damages at several points so that the driver had to be more careful to cross this road
Serious Games to Improve Attention in Boys and Girls with Attention Deficit Hyperactivity Disorder (ADHD): A Pilot Study.
Authors: Gallardo Vergara René , Monserrat Gallardo Mónica
Published: May 2023

Background: The objective of this study was to test a treatment program in Serious Games (SG) format to improve attention in children from Catalonia, Spain, with Attention Deficit Hyperactivity Disorder (ADHD). The activities adapted to the SG format consisted of (1) stimulus selection, (2) mark equal drawings, (3) eight differences, (4) hidden figures, (5) compare texts, (6) compare measures and shapes, (7) put model keys, (8) labyrinths and (9) memorization of drawings. Method: A pretest-posttest design was used with a cohort of 30 children between 8 and 10 years old diagnosed with ADHD, with 20% girls (n = 6) and 80% boys (n = 24) with a mean age of 9.4 years (SD = 0.63; range of 8 to 10 years). Four schools and a clinical center from Catalonia, Spain participated in the sample composition. Half of the sample participated in an attention improvement program for nine sessions of 30-45 minutes each in Serious Games format. They were presented with a series of game challenges with various virtual scenarios through a monitor. The other half did the same attention improvement program in pencil and paper format. Results: The children in the Serious Games group progressed and improved more during treatment, as shown by the average number of errors of commission (p =.02) than those in the pencil and paper group. Both groups also improved in the total score and concentration scale of the D2 test (p < .001). Conclusions: Attentional training through programs in Serious Games format seems to have a more significant effect on commission errors than attentional training in pencil and paper format.
Tropem Wajdy. Polskie gry cyfrowe o II wojnie światowej między centrum a peryferiami
Authors: Jankowski Filip
Published: May 2023

Celem artykułu jest syntetyczne ujęcie zjawiska gier cyfrowych II wojnie światowej powstałych w ubiegłym dziesięcioleciu na terenie Polski. Jakkolwiek tematyka ta pojawiała się w polskich grach cyfrowych już wcześniej, dopiero w drugiej dekadzie XXI wieku została przedstawiona bardziej jako traumatyczne doświadczenie aniżeli awanturnicza przygoda. Za przykłady służą trzy gry z lat 2011–2021: Popiół i diament, Warsaw, My Me-mory of Us. Badanie wykazuje, iż wspomniane tytuły odtwarzają narodową martyrologię w manierze filmów Andrzeja Wajdy.
Linguistic landscape in film works and video games
Authors: Kajszczarek Dawid
Published: May 2023

Linguistic landscape studies can yield information about the society inhabiting the given area: the use and distribution of languages, but also social structure and hierarchy of linguistic groups. For these reason, the linguistic landscape can be used in artworks to convey information regarding the fictional reality to the recipient. This paper aims to analyse what functions the linguistic landscape can perform in film works and video games, and how certain aspects of fictional realities are portrayed through the intentional use of linguistic landscapes.
Eyewitness Account of the Nazi Occupation in the South of Ukraine: Diary of a Kherson Resident
Authors: Kaparulin Yurii
Published: May 2023

On March 31, 1944, Captain of Justice G.V. Shliamar, an investigator of the Military Prosecutor’s Office (a member of the Extraordinary State Commission), examined a diary with entries about the beginning of the Nazi occupation of Kherson, which was sent to the military prosecutor’s office and eventually ended up in the archives of the commission in Moscow. The introductory article to the diary describes the historical context and the time of its creation. The source contains a description of events from July 5 to September 15, 1941, which allows us to trace the situation in Kherson and Southern Ukraine during the first months of the German–Soviet war. In particular, the author of the diary recorded the creation of a Jewish ghetto in Kherson, shortly before its liquidation and the organization of mass murder of the city’s Jewish population. Preparation of the diary for publication began in 2021, 80 years after the occupation of Kherson by German troops. On March 2, 2022, during the full-scale invasion of Ukraine by the Russian Federation, Kherson was occupied by Russian troops. This caused historical parallels, in particular through the instrumentalization of the history of the Second World War during the Russian aggression.
Improved design of advanced controller for a step up converter used in photovoltaic system
Authors: Ben Si Ali Nadia , Benalia Nadia , Zerzouri Nora
Published: May 2023

The expanding need for electricity has stimulated research and development of novel supply sources for energy production, conversion, and storage. Many studies are being done to increase the effectiveness of conversion systems as renewable energy is integrated into power networks on a larger scale. The global challenge is to minimize manufacturing costs and increase the use of sustainable resources. In this sense, photovoltaics is viewed as a particularly promising source due to the low cost of implementation and the wide range of applications it could be used for. This research focuses on the analysis, modeling, and simulation of a smart controller for a step-up converter that uses an artificial neural network (ANN) as a maximum power point tracking (MPPT) technique to provide maximum power. The proposed ANN-based algorithm is performed in Matlab/Simulink software, and its effectiveness has been demonstrated under varying climatic conditions.
Biogas production from canteen waste
Authors: Karne Hemlata , Raut Hrutuj , Baviskar Roshan , Rokde Saket , Ravnang Neha , Rathod Darshan
Published: May 2023

Day by day as the population increases, food waste keeps on growing. This waste needs to be managed in order to reduce the number of landfills and to use food waste efficiently. Among the various processes available, Anaerobic Digestion (AD) of food waste is one of the alternatives for processing food waste. The two biggest obstacles to anaerobic digestion of food waste are high biodegradability and high C/N ratio. The C/N ratio determines the ratio between substrate and nutrients; the latter is essential for microbial synthesis and for providing alkalinity through ammonia metabolism. Biogas, a product of the anaerobic digestion process, is a clean and renewable form of energy that can replace conventional energy sources that cause ecological-environmental problems and at the same time are depleted more quickly. The aim of this work was to increase the nitrogen content to enhance the production of biogas from canteen waste. During the process, two digesters of the same capacity were operated. Anaerobic digestion of canteen waste along with addition of ammonium chloride was carried out in Digester 1 while AD of only canteen waste was carried out in Digester 2. The amount of biogas produced in Digester 1 was in the range of 0.04 m3/kg–0.075 m3/kg, while in Digester 2 the volume range was 0.02 m3/kg–0.04 m3/kg. The average biogas produced in digester 1 consisting of canteen waste and nitrogen source was 0.053 m3/kg while biogas production in digester 2 with only canteen waste was 0.030 m3/kg. So, biogas produced by addition of nitrogen source was 77 % higher than that of only canteen waste. From this study we obtained a higher amount of biogas by addition of ammonium chloride as an external nitrogen source. Nitrogen demand of methanogens was fulfilled by additional supply of nitrogen resulting in increased quantity of biogas. Therefore, in anaerobic digestion addition of ammonium chloride was beneficial for food waste digestion. Hence, nitrogen content in canteen waste turned out to be the main parameter affecting anaerobic digestion of canteen waste which is justified in this research.
High mobility group box 1 in women with unexplained recurrent pregnancy loss
Authors: Ticconi Carlo , Mardente Stefania , Mari Emanuela , Barreca Federica , Montanaro Manuela , Mauriello Alessandro , Rizzo Giuseppe , Zicari Alessandra
Published: May 2023

Objectives

To investigate whether high mobility group box 1 (HMGB1) is involved in unexplained recurrent pregnancy loss (uRPL).

Methods

Plasma levels of HMGB1 were measured by ELISA in non-pregnant women with (n=44) and without (n=53 controls) uRPL. Their platelets and plasma-derived microvesicles (MVs) were also assayed for HMGB1. Endometrial biopsies were taken in selected uRPL (n=5) and control women (n=5) and the tissue expression of HMGB1 was determined by western blot and immunohistochemistry (IHC).

Results

plasma levels of HMGB1 were significantly higher in women with uRPL than in control women. HMGB1 content in platelets and MVs obtained from women with uRPL was significantly higher than that obtained from control women. HMGB1 expression in endometrium was higher in tissues obtained from women with uRPL than in tissues obtained from control women. IHC analysis revealed that HMGB1 is expressed in endometrium with different patterns between uRPL and control women.

Conclusions

HMGB1 could be involved in uRPL.
Preservice teachers’ reflections on teacher self-identities through a multicultural children’s literature project
Authors: Iwai Yuko
Published: May 2023

This study examined how 44 preservice teachers reflected on their teacher self-identities through exploring multicultural children’s books, which are published in different time periods, with a focus of analyzing characterization of main characters. The researcher collected data, including a multicultural book project, pre- and post-surveys on multicultural children’s literature and teacher identities, and a reflection paper. Data analysis consisted of looking for and coding emergent themes. The findings of the study showed that preservice teachers analyzed multicultural books from authentic perspectives, focused on how the authors used appropriate language, and examined trends in cultural details and illustrations published in different time periods. They analyzed characteristics of main characters by parsing the facts, by examining the context of the story, and by examining the personalities of main characters. They also refined their teacher identities and strengthened their commitment to become culturally responsive teachers by reflecting on the importance of equity, diversity, and inclusion and embedding high-quality multicultural children’s books into the curriculum. Implications and recommendations are also shared.
A brief synopsis of the psychosocial educational practices in the Arab higher education institutions: a first person’s viewpoint
Authors: Al-Hilawani Yasser A.
Published: May 2023

This is a reflection brief on the psychosocial educational practices in higher education institutions in several Middle East Arab countries. These practices have influenced and led to the formation of current mentalities (i.e., the way of thinking about the prospect and outlook for the future) and realities in the region. The points recounted in this brief could be used as educational learning outcomes for higher education and formal schooling reforms. In the same way that failure is a result of within, success must also come from within.
Control strategy for plug-in electric vehicles with a combination of battery and supercapacitors
Authors: Reddy Mallu Rama Prasad , Sarma Saraswathula Subramanya , Murthy Vangala Naga Siva Rama , Kowstubha Challagulla Kesava Tripureswari Sita Raghava
Published: May 2023

Research proposes an optimal power distribution approach for application of electric vehicle (EV) with use of hybrid energy storage system (HESS). HESS protection structure includes dual isolated-based soft-switching symmetrical coupling with half-bridge bidirectional converters to the system of battery and supercapacitors (SCs). The bidirectional converter properly controls the charging process of the battery and SC as well. Besides, spiral wound SCs of mesoporous electrode material have been used in EVs. In the drive cycle of EVs, the operation of SC relates to the functionality of the allocated scheme under “peak load transfer” at 2i
sc ∼ 3i
bat current profile carried out. New energy allocation strategies under SOC control enable SC charging and discharging at peak currents of around 4i
bat. The comparison of the mode of the battery system showed that the performance acceleration built under EVs has been improvised at a certain rate of 50% with a loss of energy minimised to 69%. As a result, the technique adapts different load curves, thus enhancing the utilisation of energy with reduced aging of the battery. The simulation results show that the proposed scheme meets the power demand of a typical driving cycle, for testing vehicle performance, and various energy management system have been assessed based on hydrogen consumption, overall efficiency, state of charge of SCs and batteries, stress on hybrid sources, and DC bus stability. The proposed strategy reduces hydrogen consumption by 8.7% compared to other strategies.
Vendo (?) as expressões simbólicas e contextos de uma narrativa outra: da Queermuseu às ruínas do museu
Authors: Monsell Alice J.
Published: May 2023

Neste artigo tento elucidar algumas das questões que emergiram da experiência de visitar a exposição coletiva Queermuseu em Porto Alegre no final de 2017, três dias antes de seu fechamento com quase um mês de antecedência, situação que solicita a reflexão sobre a arte contemporânea, revendo questões já abordadas por Arthur Danto e Douglas Crimp, tais como, o display museológico; as implicações para um público de uma arte reproduzida na internet, a presença do observador e da obra; e o desconhecimento sobre os procedimentos artísticas da arte contemporânea, como a apropriação, a reutilização e a pós-produção de imagens captadas pelo artista. Também discutirei outras exposições que abordaram temáticas queer: Queer British Art, Londres e Hide/Seek: Difference and Desire in American Portraiture, que também passou pela censura nos EUA em 2010. Seeing (or not?) other narratives and contexts of symbolic expression: from Queermuseu to the ruins of the museumAbstract: In this article I try to elucidate some of the issues that emerged from the experience of visiting the Queermuseu exhibition in Porto Alegre at the end of 2017, three days before its closure almost a month in advance, a situation that calls for reflection on contemporary art, and review issues already addressed by Arthur Danto and Douglas Crimp, such as the museological display; the issues of the public and it’s reception of art reproduced on the internet, the presence of the observer and the work of art, the lack of knowledge about the procedures of contemporary art, such as  appropriation, reuse and post-production of images captured by the artist. We also discuss exhibitions that dealt with similar themes:  Queer British Art, London and Hide / Seek: Difference and Desire in American Portraiture which also was censored in the USA in 2010.
Intervenções estéticas, interpelações políticas: breves incursões na arte urbana latino-americana
Authors: Moreira Maria Elisa Rodrigues
Published: May 2023

Parte das produções artísticas contemporâneas se constitui de projetos de intervenção urbana com forte caráter social, que, simultaneamente, transformam esteticamente o espaço citadino e interpelam politicamente aqueles que por ele transitam, remetendo ao que Jacques Rancière denomina “regime estético das artes”. Este artigo propõe uma breve incursão por algumas dessas produções, as quais possibilitam refletir sobre as aproximações entre cultura, arte e política no espaço latino-americano.   Aesthetic interventions, political interpellations: brief incursions into Latin American urban art Abstract: Part of contemporary artistic production consists of urban intervention projects with a strong social character, which simultaneously transforms city space aesthetically and politically interrupts those who pass through it, referring to what Jacques Rancière calls the "aesthetic regime of art". This article proposes a brief descent into some of this production, allowing us to reflect on the connections between culture, art and politics in Latin American space.
¡QUE HACE UN DIRECTOR DE FOTOGRAFÍA?
Authors: Nuble Facundo
Published: May 2023

Resumen: Ensayo visual compuesto por frames de producciones audiovisuales del Diretor de Fotografía Argentino Facundo Nuble.Palabras-claves: Dirección de Fotografía; Cine Contemporáneo; Audiovisual LatinoamericanoO QUE É UM DIRETOR DE FOTOGRAFIA?Resumo: Este ensaio visual é composto por frames de produções audiovisuais do Diretor de Fotografia argentino Facundo Nuble.Palavras-chave: Direção de Fotografia; Cinema Contemporâneo; Audiovisual Latino-americano
UN VIAJE AL SUR
Authors: Villot Gabriel
Published: May 2023

Resumen: Serie de trabajos del artista argentino Gabriel Villot realizados con técnica de lápiz, tinta y acuarela sobre tela con dimensiones variadas. Palabras-claves: Arte Contemporánea; Acuarela, Arte Argentina. UMA VIAGEM AO SUL  Resumo: Série de trabalhos do artista argentino Gabriel Villot realizados com técnica de lápis, tinta e aquarela sobre tela com dimensões que variadas. Palavras-chave: Arte Contemporânea; Aquarela, Arte Argentina.
Narrativas de uma destruição: Raquel Andrade Ferreira
Authors: Ferreira Raquel Andrade
Published: May 2023

Este ensaio visual  apresenta quadros selecionados do vídeo de Raquel Ferreira, Narrativas de uma Destruição-Parte V, de 2012 Narratives of a destruction: Raquel Andrade Ferreira Abstract:  This visual essay presents selected frames from Raquel Ferreira’s video, Narratives of a Destruction-Part V produced in 2012.
Features of structural ordering and magnetic properties of the cobalt intercalates of titanium dichalcogenides
Authors:   Institute of Solid State Chemistry, Ekaterinburg 620108, Russia, Urusova N.V. , Merentsov A.I. ,   Institute of Metal Physics, Ekaterinburg 620137, Russia, Stepanov E.A. ,   Institute of Solid State Chemistry, Ekaterinburg 620108, Russia, Reznitskikh O.G. ,   Institute of Solid State Chemistry, Ekaterinburg 620108, Russia
Published: May 2023

CoxTiS2 (x = 0.20, 0.30, 0.50, 0.75) compounds have a layered crystal structure with Ti atoms surrounded by the S octahedrons in the S-Ti-S layers and Co ions which could be surrounded both by the S octahedrons and tetrahedrons. The features of the crystal structure and magnetic properties of the polycrystalline CoxTiS2 samples were studied as a function of the cobalt concentration using X-ray diffraction and magnetization measurements. The disordered state of the Co atoms (x < 0.20) changes to the ordered one (x ≥ 0.20). The magnetic ordering arises at x = 0.20 with mostly antiferromagnetic interaction. For compound with x = 0.30 and 0.50 there is a weak ferromagnetic ordering. The ferromagnetic ordering is observed in Co0.75TiS2 below Tc = 375 K.
Study of femtosecond nonlinear optical coefficients for Bi doped Se85-xTe15Bix chalcogenide thin films
Authors:   St. Andrews Institute of Technology & Management, Gurugram, Haryana, India, Yadav P. , Tyagi C. ,   Department of Applied Sciences, The NorthCap University Gurugram, Haryana, India, Devi A. ,   Amity University Haryana, Amity Education Valley, Pachgaon, Manesar, Gurugram, Haryana 122413, Gahlot N. ,   St. Andrews Institute of Technology & Management, Gurugram, Haryana, India
Published: May 2023

The present work reports the influence of selenium replacement by bismuth on the nonlinear optical parameters of ternary Se85-xTe15Bix (x=0, 1, 2, 3, 4, 5 atomic %) chalcogenide thin films. Calculation of nonlinear refractive index (n2), two-photon absorption coefficient (β2) and third-order susceptibility (χ (3)) by well known Z-scan technique with femtosecond laser pulses were done. The Z-scan spectra for Se85-xTe15Bix upto Bi= 4 atomic % results in self- focusing behavior of n2 is positive while for Bi=5 atomic % n2 is negative. The behavior of n2 by using different physical parameters are exlpained. The comparison of experimental and theoretical values of n2 with pure silica are also studied. The presence of the valley at focus in open aperture Z-scan graph demonstrates strong reverse saturable absorption. The figure of merit (FOM) for the SeTe-Bi chalcogenide thin films is found to be less than 1 and are beneficial for all-optical switch devices.
Fabrication and study of characteristics of HgSr2 Can-1CunOδ+10, (n = 1, 2 and 3) thin films superconducting
Authors:   Department of physics, College of Education for Pure Science / Ibn Al-Haitham, University of Baghdad, Baghdad, Iraq, Mahdi S. H. , Mohammed L. A. ,   Department of physics, College of Education for Pure Science / Ibn Al-Haitham, University of Baghdad, Baghdad, Iraq, Fadhil R. N. ,   Department of physics, College of Education for Pure Science / Ibn Al-Haitham, University of Baghdad, Baghdad, Iraq, Hussein B. H. ,   Department of physics, College of Education for Pure Science / Ibn Al-Haitham, University of Baghdad, Baghdad, Iraq
Published: May 2023

Recently, particular attention has been given to the material of Superconducting films because of its exceptional electrical and optical properties. In this work, HgSr2 Can1CunOδ+10, (n = 1, 2 and 3 ) .Thin Films Superconducting have been prepared by twostep process bulk and thin film. The optical properties were calculated absorption, transmission, reflection, band gap, coefficient of absorption, excitation coefficient and index of refraction in the range of wavelengths (300-1100) nm using a double beam spectrophotometer (UV/VIS). Structural, morphological, and electrical properties were investigated using X-ray diffraction (XRD) and AFM, Using the 4-probe technique measuring the resistivity as a function of temperature. The composite HgSr2 Ca2Cu3Oδ+10 showed an improvement in all properties the structural, electrical and optical as a result of increasing of Cu-O layers.
UV irradiation of PVA-3%M, (M=NiO, MgO, Al2O3) nanoparticles for medical applications
Authors:   Physics Department, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia, Rashad M. , Al-Qarni A. ,   Physics Department, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia, Al-Muayqili J. ,   Physics Department, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia, Al-Qarni I. ,   Physics Department, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia, Al-Rashidi J. ,   Physics Department, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia, Al-Shehri F. A. ,   Physics Department, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia, Al-Ghamdi S. ,   Physics Department, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia, Al-Balawi M. M. ,   Physics Department, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia, Al-Ghamdi S. A. ,   Physics Department, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia, Hanafy T. A. ,   Physics Department, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia, Al-Rubaie F. ,   Physics Department, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia
Published: May 2023

Polyvinyl Alcohol (PVA) of PVA-3%M, where M stands for NiO, MgO, and Al2O3, has been created. Characterization was done using X-ray diffraction (XRD). This characteristic verified the production of the generated oxide NPs during chemical precipitation in PVA. The PVA-3% M nanoparticles (M=NiO, MgO, and Al2O3) were examined for their optical characteristics. After 60 minutes, the PVA-3% M nanoparticles (M=NiO, MgO, and Al2O3) were subjected to UV light irradiation to examine its effects. The optical properties have been studied in UVA (315–400 nm) area, or long-wave UV, in energy of (3.9–3.1) eV. Time under UV light has an impact on the optical energy gap of PVA-3% M. As a function of the UV exposure time, the optical characteristics of PVA3% M nanoparticles (M=NiO, MgO, and Al2O3) were evaluated. Calculated optical constants for PVA-3% M (M=NiO, MgO, Al2O3) NPs as-prepared and after UV irradiation illustrate the impact of UV irradiation period. These data demonstrate that a highly forced for medical applications.
A novel method for preparation of graphene-containing biochar and application to supercapacitors
Authors:   Hunan Provincial Key Laboratory of Fine Ceramics and Powder Materials, School of Materials and Environmental Engineering, Hunan University of Humanities, science and Technology, Loudi, 417000, P. R. China, Liu X. , Ning X. ,   Hunan Provincial Key Laboratory of Fine Ceramics and Powder Materials, School of Materials and Environmental Engineering, Hunan University of Humanities, science and Technology, Loudi, 417000, P. R. China, Zeng B. ,   College of Mechanical Engineering, Hunan University of Arts and Science, Changde 415000, P. R. China, Liu W. ,   College of Mechanical Engineering, Hunan University of Arts and Science, Changde 415000, P. R. China, Li L. ,   College of Mechanical Engineering, Hunan University of Arts and Science, Changde 415000, P. R. China
Published: May 2023

New carbon-based materials have drawn tremendous attention in several technological applications. Here, the synthesis of graphene-containing biochar was prepared through carbonation and activation processes, using pre-oxidized magnolia flowers. In particular, the activation method was conducted in copper foil under high pressure, which led to the high biochar yield and excellent electrical conductivity of biochar for graphene-containing hybrid. Furthermore, heteroatoms (including nitrogen and oxygen) were successfully doped into the biochar. As a result, the hybrid demonstrated excellent electrical properties, at high nitrogen (1.02 %) and oxygen levels (14.80 %). The as-prepared biochar was used to produce an all solid state symmetric superconductor with a capacitance of 261.8 F g-1 at a specific current of 0.5 A g-1 , and energy density of 6.9 Wh kg-1 at powder density of 20 kW kg-1 .The enhanced electrochemical performance was attributed to the positive effect of synergy between highly conductive graphene-containing biochar and heteroatoms doping
Cu/graphene oxide composited coatings for preventing clinical implant bacterial infections: an antibacterial mechanism study
Authors:   School of Medicine, Hubei Polytechnic University, Huangshi 435003, China, Zhao C. H. , Yang Y. Q. ,   School of Medicine, Hubei Polytechnic University, Huangshi 435003, China, Yang H. L. ,   School of Medicine, Hubei Polytechnic University, Huangshi 435003, China, Tan J. M. ,   School of Medicine, Hubei Polytechnic University, Huangshi 435003, China, Gong R. H. ,   School of Medicine, Hubei Polytechnic University, Huangshi 435003, China, Yang Y. X. ,   School of Medicine, Hubei Polytechnic University, Huangshi 435003, China, Zhang X. P. ,   Division of Academic Research, Tongren Polytechnic College, Tongren 554300, China
Published: May 2023

Recently, graphene oxide (GO) based materials have shown great potential in the treatment of implant bacterial infections due to its inherent antibacterial activity. However, the effect of GO-based materials on biological systems particularly the antibacterial mechanisms is still not clear. In this study, GO, NaBH4 treated GO (GO-Y), copper decorated GO (GO-Cu, GO-Cu-GO) composited coatings were prepared on the surface of silicon dioxide (SiO2) substrate by spin-coating and chemical in-situ formation. The growth of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) on GO-Y, GO-Cu, and GO-Cu-GO were significantly inhibited, especially on GO-Cu and GO-Cu-GO coatings. The implied antibacterial mechanism of GO-Cu-Cu coatings was further studied and discussed. The enhanced antibacterial performance of GO-Cu-GO coatings has significant potential application in preventing clinical implant bacterial infections. Moreover, the systematic study of various antibacterial effects also enriches our knowledge of the possible antibacterial mechanisms of graphene-based materials.
Structure and opto-electronic properties of MgO nanocrystals calculated by GGA approximation
Authors:   Department of Mathematics, KPR Institute of Engineering and Technology, Coimbatore, 641407, Tamilnadu, India, Myvizhi M. , Satheesh Kumar K.V. ,   Department of Mechanical Engineering, Kongu Engineering College, Perundurai, Erode, 638060, Tamilnadu, India, Kavitha P. R. ,   Department of Mathematics, KG College of Arts and Science, Coimbatore, 641035, Tamilnadu, India, Selvakumar P. ,   Department of Humanities and Sciences, Gokaraju Rangaraju Institute of Engineering and Technology, Hyderabad, 500090, Telangana, India
Published: May 2023

This study uses the CASTEP code and the density functional theory (DFT) to look into the structure, electrical properties, and optical properties of MgO. The generalised gradient approximation (GGA-PW91 approximation) was used to measure both the energy of the band gap and the energy of the exchange-correlation. This computation was done based on the cubic MgO crystal structure, which has a space group of Fm-3m and a 3x3x3 supercell. In structural optimization, the results that are expected for the lattice constant and the bulk modulus elastic constant are very close to known experiments and theories. The anticipated direct band gap of 4.283eV at the G point is in excellent agreement with the results of the tests. Also, the total (DOS) and partial (PDOS) densities of states have been measured, and the results of the absorption coefficient have been looked at in terms of the different energies of the phonons that hit the material.
Effect of thickness on the physical characterization of sprayed ZnO thin ﬁlms
Authors:   Ministry of Education, General Directorate of Babylon Education, Babylon, Iraq, Saleh H. A. , Hussein J. M. ,   Ministry of Education, Anbar Education Directorate, Al-Qaim Education Department, Iraq, Alkateb D. E. ,   Ministry of Education, General Administration of Education, Governorate of Babylon, Iraq, Habubi N. F. ,   Department of Radiation and Sonar Technologies, Alnukhba University College, Iraq, Ahmed F. Sh. ,   Basic science Division, Faculty of Agricultural Engineering, Baghdad University, Iraq, Chiad S. S. ,   Department of Physics, College of Education, Mustansiriyah University, Iraq.
Published: May 2023

ZnO thin films having different thicknesses (300, 400 and 500) nm were deposited by spray pyrolysis method (SPM). XRD analysis indicate that the deposited films have hexagonal wurtzite structure and display a strong peak at (002) plane. The effects of thicknesses on crystallite size, stress and strain are investigated. The thicknesses effect on film surface topography parameters such as roughness, particle size and Root mean square of grains are calculated. Atomic Force Microscopy (AFM) confirm that the distribution grains size appears nanostructure and homogeneous in all films. RMS increases from 1.54 nm to 3.98 nm with thicknesses 500 nm. The surface roughness increases from 1.33 nm to 3.30 nm. Transmittance was detecting to be atop 80% in visible region. The bandgap energy increased from 2.83 eV to 3.75 eV with thickness elevation.
The effect of Barium substitution on the structural and dielectric properties of Pb1-XBaX(Zr0.52Ti0.43(Al0.5Sb0.5)0.05)O3 ceramics at the morphotropic phase boundary
Authors:   Laboratory of Applied Chemistry (LCA), Matter Science Department, Mohamed Khider University, P.O. Box 145, 07000, Biskra, Algeria, Benmakhlouf A. , Makhloufi R. ,   Laboratory of Applied Chemistry (LCA), Matter Science Department, Mohamed Khider University, P.O. Box 145, 07000, Biskra, Algeria, Boutarfaia A. ,   Laboratory of Applied Chemistry (LCA), Matter Science Department, Mohamed Khider University, P.O. Box 145, 07000, Biskra, Algeria, Messai B. ,   Laboratory of Applied Chemistry (LCA), Matter Science Department, Mohamed Khider University, P.O. Box 145, 07000, Biskra, Algeria, Hadji F. ,   Laboratory of Molecular Chemistry and Environment (LMCE), Matter Science Department, Mohamed Khider University, P.O. Box 145, 07000, Biskra, Algeria, Nouiri M. ,   Laboratory of Physics of Materials and Nanomaterials Applied in Environment (LaPhyMNE), Faculty of Sciences, University of Gabes, Gabes, Tunisia
Published: May 2023

In this study PZT type ceramics with a general formula Pb1- xBax(Zr0.52Ti0.43(Al0.5Sb0.5)0.05)O3 where (x = 0.00, 0.04, and 0.08) were elaborated by the solid-state reaction and studied for their structural and dielectric properties in the region of the morphotropic phase boundary (MPB). Different techniques were used to characterize the obtained samples such as X-ray diffraction (XRD) which shows that the results confirm the high purity of prepared samples without any secondary phase and also indicate the coexistence of both the tetragonal and rhombohedral phases. All the absorption bands corresponding to the perovskite structure are exhibited by The Fourier Transform Infrared spectroscopy (FTIR). The scanning electronic microscopy (SEM) shows that the mean grain size was found between 2,84 and 2,14 µm, the Curie temperature (TC) decreased with increasing Ba2+ content. Furthermore, the effect of the temperature, frequency, and composition on the dielectric properties demonstrated a maximum value of the dielectric constant ε max = 38800 at 1 kHz when X= 0.08.
Language Editors: Job Prestige, Influence on Language and Perceived Threats
Authors: Jakaitė-Bulbukienė Kristina , Micutaitė Neringa
Published: May 2023

The object of this work is to analyse Lithuanian language editors‘ self-assessment of their own work, to see how they are influenced by societal attitudes, and to uncover their relationship to Lithuanian language. These aspects help to investigate the linguistic attitudes of Lithuanian language editors. This is analysis of 10 qualitative in-depth semi-structured interviews with Lithuanian language editors. The texts edited by the participants vary in their nature. All informants are women. Nine interviews have been conducted orally and one in writing. The method applied is qualitative content analysis of the interviews. It has been found that the informants of the study feel that there are critical, skeptical attitudes towards language editors and linguists in general in the public sphere. Editors also often hear inaccurate assessments of their profession from inner cycle. However, most of them do not take such attitudes seriously and do their work without taking them into account. It has been found that most of the informants feel that they contribute to the development of the Lithuanian language and that they influence the language. This is because even editors with extensive editing experience are constantly confronted with new phenomena. Most of the informants of this study have told they can edit freely, are trusted by clients or writers, and are not constrained making their decisions. Editors have also answered that they have a mission to enrich and purify language. A small number of informants of the study have told that they do not see themselves as language creators, but only as executors of the already established language policy. Some editors have indicated they want to stop the influence of English to Lithuanian, while others believe that the influence of other languages is a natural phenomenon, and stress that the language is impoverished by an excessive desire to purify it.
Assessment of Stock Market Liquidity and Efficiency: Evidence from an Emerging Country
Authors: Monga Reema , Aggrawal Deepti , Singh Jagvinder
Published: May 2023

The study examines the market efficiency, multi-dimensions of liquidity, and their interconnectedness for the Emerging Indian Stock Market. In contrast to the extant literature, the current study involves testing the market liquidity considering multi-dimensions such as depth, breadth, immediacy, tightness, and resiliency. Second, the study used a battery of tests to determine efficiency, including the Ljung and Box, runs test, Bartel test, Variance ratio, and BDS tests. Furthermore, using five quintiles classified by market depth, the linkage of market efficiency and liquidity is also being investigated. The findings show that during the pandemic, the Indian stock market has been proven to be efficient, suggesting that there are no abnormal returns. Moreover, the research demonstrates that during the COVID-19 pandemic, large volumes of securities are traded quickly and at a lower price effect, but with higher trading costs for completing a market transaction. However, it is worth noting that increased liquidity equates to greater efficiency, while lower liquidity equates to inefficiency.