bluuebunny/crossref_metadata_2025 huggingface dataset:
Медиаполитика и общественное мнение в медиапространстве
Authors:   Московский государственный институт международных отношений (университет), Шарков Ф.И. , Бузин В.Н. ,   Центральный научно-исследовательский институт организации и информатизации здравоохранения, Шубрт И. ,   Карлов университет
Published: September 2022

Учебное пособие посвящено формированию современного медиапространства. Раскрываются вопросы виртуального медиавоздействия на аудиторию, формирования и реализации медиаполитики в сложносетевой структуре. Рассматриваются особенности формирования общественного мнения в медийном пространстве. Для студентов высших учебных заведений, обучающихся по направлениям подготовки «Журналистика», «Реклама и связи с общественностью», а также для всех, кто интересуется вопросами развития современного медиапространства.
Optimization of electrical submersible pump artificial lift system for extraheavy oils through an analysis of bottom dilution scheme
Authors: Díaz-Prada Carlos Andrés , Guarín Arenas Flaminio , González-Barbosa Javier Enrique , García Chinchilla César Augusto , Cotes León Esperanza de Jesús , Rodríguez Walteros Carolina
Published: September 2022

This study presents the analysis of the variables that have the greatest impact on energy requirements for an artificial lift system applied to extra heavy crude oils, considering an uncertainty behavior analysis through their sensitivity in the vertical flow modeling implemented for a Chichimene Field well. The selected variables are the viscosity and fluid density, the required artificial lift system pressure differential, well depth, the flow rate of produced fluids and the dilution percentage. The oil produced in this field has a density of 7,8 API, and the well studied features a water cut of about 10% and produces a total of 2400 BOD. For this flow naphtha dilution rates were defined using up to 20% by volume. The ranges of energy required for the lifting system for different scenarios raised by the analysis variables were also determined. For these conditions a variation of the energy required 20% for a fluid flow incremental of 50 BFOD was obtained, as established from the flow capacity of the well and the pressure required for sustaining a pressure head of 100 psi and 400 psi. Bottom dilution scheme establishes a change in artificial lift system energy requirement, of up to 25% for a 15% of diluter, whereas the relationship between the volumes produced and the system arrays gives an energy efficiency of 40%.
PRESSURE AND PRESSURE DERIVATIVE TRANSIENT ANALYSIS WITHOUT TYPE-CURVE MATCHING FOR ELONGATED RESERVOIRS WITH CHANGES IN FACIES OR WIDTH
Authors: Escobar Freddy Humberto , Montealegre Matilde , Carrillo Moreno Daniel
Published: September 2022

Due to geologic and tectonic events many reservoirs have an elongated geometry in which dual-linear and single-linear flow regimes may be developed. The single-linear flow may be altered by changes in facies (mobility) or reservoir width (composite reservoir). Therefore, it is desirable to identify and characterize these types of systems which lead to competent decisions and adequate reservoir management. The identification and determination of parameters for such reservoirs are conducted by conventional techniques (straight-line method), type-curve matching of pressure versus time and the Tiab’s Direct Synthesis (TDS) technique. This last one has been lately presented for homogeneous and constant width reservoirs. In this paper, an extension of the TDS technique to incorporate variations in either mobility or reservoir width is presented. Several simulation experiments were run to understand the behavior of the reservoir under these new conditions. If the change of the mentioned parameters takes place after the dual- linear flow has ended a new half-slope line is observed on the pressure derivative curve. This new line is shifted upwards the original dual-linear line without regarding the variation of one of the studied parameter. When, the anomaly occurs during dual- linear flow the new half-slope line of the pressure derivative curve may be shifted upwards or downwards depending upon the magnitude of either mobility or reservoir width. This new line may not be referred as linear flow regime because it is really not. We have named it as pseudo-linear flow regime, instead. Therefore, a modification of the intercept of the ½-slope line from 0,5 for dual-linear flow regime to a greater or smaller value, which may be different from (single-linear flow case) has to be considered in order to provide new equations for the estimation of new values of either permeability or reservoir width. The proposed methodology was successfully verified by interpreting both synthetic and field pressure tests for elongated oil reservoirs which involve changes in either mobility or reservoir width during the path of the transient wave.
SYNGAS OBTAINMENT FROM THE GASIFICATION OF ASPHALTENES OF THE SAN FERNANDO CRUDE OIL
Authors: Afanador Rey Luz Edelmira , Grosso Vargas Jorge Luis , Moreno Arciniegas Laura Smith , Rodríguez Corredor Fabio Ernesto
Published: September 2022

In this work, we developed the first study in Colombia to obtain and evaluate syngas compositions derived from asphaltenes gasification. These asphaltenes came from the implementation of a Deasphalting process to San Fernando crude oil, with the purpose of looking for technological options for their utilization. We performed the design, installation and commissioning of facilities for the gasification of asphaltenes at laboratory scale, it following an experimental methodology, performing nine tests and considering temperature and agent gasification quantity (oxygen) as independent variables. The syngas derived from gasification was analyzed by two chromato graphic techniques, which reported the presence of refinery gases and sulfur. We evidenced a growth tendency of CO, H2 and sulfur composition and a decrease in CH4 and CO2 composition with temperature. The composition of the syngas was evaluated with different quantities of gasification agent (33%, 40% and 47% the amount of oxygen theoretically required for complete combustion) at each temperature levels operated. It was established that when using a 40% of gasification agent, you get greater average content of CO and H2, which are the interest gases in the gasification process.
THE STRUCTURAL STYLE OF FOOTWALL SHORTCUTS ALONG THE EASTERN FOOTHILLS OF THE COLOMBIAN EASTERN CORDILLERA. DIFFERENCES WITH OTHER INVERSION RELATED STRUCTURES
Authors: Mora Andrés , Parra Mauricio
Published: September 2022

For the first time we show geological evidence of unambiguosly documented footwall shortcuts adjacent to the trace of inverted master nomal faults, in the Eastern Cordillera of Colombia. The Eastern Cordillera is an orogen whose width and location are traced by a Mesozoic graben. However, few structures related with the graben have been documented up to the date. In this study we propose the Ariari-Guatiquía region as a type location for a unique observation of footwall shortcuts. The master normal faults in the Ariari-Guatiquia region, and documented in this manuscript, were active during the Lower Cretaceous, partially inverted during the Andean orogenesis (since the Oligocene at least) and active still nowadays. In the hangingwall basins of those master normal faults, like the Servitá fault, all the Cretaceous syn-rift sequence has been deposited and maximum paleo temperatures in the lowermost Cretaceous rocks are higher than those for the Zircon FT partial annealing zone (~250°C; 23,15 K). In contraction, the inverted master normal faults are high angle basement involved features that generated the main topographic contrast and exposing Lower Cretaceous units or older. In contrast, in the adjacent footwall shortcuts only part of the syn-rift Lower Cretaceous sequence was deposited or more commonly was not deposited at all. Maximum paletemperatures reached by the basal Cretaceous units exposed in the hanging wall blocks of the footwall shortcuts are always less than those of the Zircon FT partial annealing zone (~250°C; 23,15 K). Finally we use AFT data to document that the footwall shortcuts originated during the Late Miocene and later as shallowly dipping faults generating low elevation hanging wall areas. All the described features are present in the Ariari-Guatiquia region. However, northwards and along strike in the Eastern foothills there is a lot of partially analogue scenarios with respect to those described in the Ariari-Guatiquia region. Therefore we deduce that a similar structural segmentation should be present along the entire Eastern foothills of the Colombian Eastern Cordillera. Based on that we propose plausible candidates for master inverted normal faults and footwall shorcuts in other areas of the Eastern foothills.
SYNTHESIS AND CHARACTERIZATION OF THE POLYSTYRENE - ASPHALTENE GRAFT COPOLYMER BY FT-IR SPECTROSCOPY
Authors: León Bermúdez Adan Yovani , Salazar Ramiro
Published: September 2022

The creation of new polymer compounds to be added to asphalt has drawn considerable attention because these substances have succeeded in modifying the asphalt rheologic characteristics and physical properties for the enhancement of its behavior during the time of use. This work explains the synthesis of a new graft copolymer based on an asphalt fraction called asphaltene, modified with maleic anhydride. Polystyrene functionalization is conducted in a parallel fashion in order to obtain polybenzylamine resin with an amine - NH2 free group, that reacts with the anhydride graft groups in the asphaltene, thus obtaining the new Polystyrene/Asphaltene graft copolymer.
MORPHOLOGICAL CLASSIFICATION OF COKE FORMED FROM THE CASTILLA AND JAZMÍN CRUDE OILS
Authors: Picón Hernández Héctor Julio , Centeno Hurtado Aristóbulo , Pantoja Agreda Edgar Francisco
Published: September 2022

Amorphological classification of cokes from the Castilla and Jazmín Colombian crude oils was completed. These heavy-nature crude oils, after being fractioned during the refining stages, were physicochemically characterized and submitted to the coking process. The conclusions of this work are based on the characterization of the feedstock chemical composition according to the type of aromatic carbon. UV visible spectrophotometry and the corresponding micrographs obtained by a Scan Electron Microscope (SEM), in amplification intervals from 100X to 5000X for the samples of formed cokes, were analyzed. Results of this work allowed the determination of the morphological classification intervals in function of the polyaromatic compound concentration ratio (tetraromatic / triaromatic, and diaromatic / triaromatic) of the different coked feedstocks. Furthermore, high content of calcium and sulfur in the feedstocks promotes morphologies of the associated - shot type.
THERMAL MATURITY HISTORY AND IMPLICATIONS FOR HYDROCARBON EXPLORATION IN THE CATATUMBO BASIN, COLOMBIA
Authors: Rangel Antonio , Hernández Roberto
Published: September 2022

A thermal model integrated with an oil and gas geochemical study has been constructed for the Catatumbo Basin, Colombia to provide petroleum system data for hydrocarbon exploration.  The calibration of the thermal model with maturity data took into account a changing heat flow scheme which included a thermal increase towards the end of the Jurassic and another one in the Early Eocene, associated with rifting events.  Locally, active/generating source rocks are within the synclines axes. The hydrocarbon expulsion time for Cretaceous source rocks (Capacho and La Luna formations) started in the Upper Paleocene-Eocene, while for the Los Cuervos Formation the generation and expulsion started at 10 my. The petroleum expelled during the Paleocene-Miocene, were likely accumulated in structures formed since the end of the Cretaceous, while the younger structures that resulted from the Andean orogen were charged by remigration from the older structures and additionally with the yougest lately generated hydrocarbons. The accumulations of hydrocarbons are mainly the result of generation and migration locally within the basin.  The Catatumbo basin contains thermogenic wet gases with different degrees of thermal maturity which varies from around 1,0 to 2,5 equivalent Ro. The highest degree of thermal evolution according to maturity indicators and thermal modeling is in the southern area, which is prospective for wet gas. The central and northern area appears more prospective for oil with minor amounts of gas.
The dilemma in management of desmoid tumour: A case report
Authors: Lee Fei Yee , Jagwani Arvind , Mohamad Sharin Mohamad Fairuz , Zakaria Andee Dzulkarnain , Hayati Firdaus , Sagap Ismail
Published: September 2022

Introduction

Desmoid tumours are rare benign tumours. The tumours may develop sporadically or they may be linked to familial adenomatous polyposis (FAP) in Gardner’s syndrome.

Aim

This article highlights a young lady with an intra-abdominal desmoid tumour that manifested as an acute abdomen and we discuss our management strategy.

Case study

A 24-year-old lady with a known FAP who had undergone a panproctocolectomy with an ileal pouch-anal anastomosis and total thyroidectomy, later was complicated with acute abdomen for symptomatic desmoid tumour. Computed tomography of the abdomen showed a large intraperitoneal heterogenous mass with small bowel displacement and was confirmed by magnetic resonance imaging. An exploratory laparotomy and en-bloc resection of the tumour with an end ileostomy were performed.

Results and discussion

Intra-abdominal desmoid tumours usually present as a painless slow-growing mass, however, in severe form, it can cause bowel ischemia, intestinal obstruction, or deterioration of function in the ileoanal anastomosis, among post total colectomy. Surgery is indicated upfront in specific clinical scenarios namely complications (occlusion, perforation, or bleeding) or major cosmetic issues.

Conclusions

Desmoid tumour, despite being benign, is challenging to manage due to its compressing nature. As a key point, the diagnosis of a desmoid tumour should be suspected and followed up closely in patients with a previous history of FAP in combination with extracolonic manifestation.
PV PANEL ENTEGRELİ FDM-NANOPARTİKÜL KARIŞIMININ 1-D MATEMATİKSEL MODEL KULLANILARAK İNCELENMESİ
Authors: ÖKTEN Korhan
Published: September 2022

PV panellerinin radyasyon miktarına bağlı olarak ısınması ve veriminin düşmesi bilinen ve üzerinde birçok çalışma yapılan bir olgudur. PV panellerin soğutulması için panel tabanına FDM eklenmesi ise literatürde yaygın olarak görülen bir pasif soğutma yöntemidir. Bu çalışmada ise PV panel tabanına FDM eklenmesi ve farklı hacim oranlarında FDM nanopartikül karışımı eklenmesi durumunda PV panel sıcaklığı, panel verimi, elektrik üretimi ve FDM konteynerindeki erime oranları 1-B matematiksel model kullanılarak incelenmiştir. Çalışma 800, 1000, 1200 W/m2 radyasyon değerleri için gerçekleştirilmiştir. Sonuçlar incelendiğinde en yüksek verim ve elektrik üretimi değerlerinin hacimce 0.5 nanopartikül PCM karışımı için elde edildiği görülmüştür. Verim ifadesi hacimce 0.5 nanopartikül karışımı için 800, 1000 ve 1200 W/m2 için sırasıyla % 18.3, %17.7 ve %17.2 olarak elde edilmiştir ki bu değerler geleneksel PV panelinden yaklaşık %1 fazladır. Eleltrik üretimi ise yine 0.5 nanopartikül FDM karışımı için sırasıyla 112.5, 128 ve 158 W olarak elde edilmiştir ve bu değerler geleneksel PV panelden sırasıyla 5, 7 ve 8 W daha fazladır.
PET Lif Takviyeli Farklı Puzolanik İkameli Çimento Harçlarının Mekanik Etkisi
Authors: FİLAZİ Ahmet
Published: September 2022

Bu çalışmada, çimento harçlarında, Uçucu kül (UK), Yüksek Fırın Cürufunun (YFC) ve Polietilentereftalat (PET) lif takviyesi kullanarak mekanik ve fiziksel özellikler incelenmiştir. Bu amaçla, çimento harcının eğilme ve basınç dayanım özelliklerini arttırmak amacı ile karışıma bağlayıcı oranın ağırlığını %0.5 %1, %1.5 %2 ve %3 PET lif ilave edilmiş ve optimum lif takviyesi %1 olarak belirlenmiştir. Daha sonra %1 PET lif katkılı UK ve YFC %0, %5, %10, %15, %20, %25 ve %30 ikame edilerek kompozit numuneler üretilmiştir.

Yapılan çalışma sonuncunda; PET lifli karışımlarda, %1 PET lif ilave edildiğinde eğilme dayanımının %25.79 oranında arttığı görülmüştür. Bununla birlikte UK ikameli karışımlarda PET lif ilavesi artıkça eğilme dayanımının arttığı ve en yüksek eğilme dayanımının %1 PET lif takviyeli %10 UK ve YFC ikameli çimento harç karışımları olduğu görülmüştür. Harç numuneleri üzerinde, eğilme, basınç dayanımı ve ultrasonik ses hızı ölçümü deneyleri gerçekleştirilmiştir.
Effectiveness of structured teaching programme on knowledge regarding management of extravasation of chemotherapeutic drugs
Authors: Pooja Prakash , Ayush Chandra , Malathi Kotha , Santosh Kumar Das , Barsha Prakash , Avinash Chandra , Gyaljin Sherpa , Sudikshya Acharya
Published: September 2022

Background: More than 1 million intravenous chemotherapy infusions are given worldwide each day which leads to extravasation. Health professionals must know the drugs that cause tissue injury and take the necessary measures to prevent extravasation. Objectives: The study aimed to assess the knowledge regarding the management of extravasation of chemotherapeutic drugs before and after the implementation of a structured teaching program among staff nurses. Method: The pre-experimental group pre-test and post-test designs were adopted for the study. The convenience sampling technique was used to obtain 30 staff nurses of Ramaiah Medical College Hospital, India. Both Pre-test and Post-test were performed using the same structured knowledge questionnaire followed by 45 minutes of the structured teaching program. Data were processed through Statistical Package for Social Sciences version 20 and analyzed using descriptive and inferential statistics. Results: More than half of the subjects were female (66.7%) and 36.7% of the subject had more than 10 years of professional experience. Most of the subjects (70%) had inadequate knowledge during the pretest. The mean knowledge score was 15.33 ± 4.003 and 24.67 ± 5.384 in pre-test and post-test respectively. There was a significant difference in pre-test and post-test knowledge scores regarding the management of extravasation of chemotherapeutic drugs. Conclusion: The Study concluded that the structured teaching program was significantly effective in improving the knowledge regarding the management of extravasation of chemotherapeutic drugs among nurses.
Aktivitas Antifungi Formula Kitosan-Tripolifosfat Terhadap Infeksi Colletotrichum spp. Pada Cabai
Authors: Suryadi Yadi , Susilowati Dwi Ningsih , Samudra I Made
Published: September 2022

Colletotrichum spp. penyebab penyakit antraknosa banyak menginfeksi tanaman cabai, sehingga perlu dikendalikan dengan agen hayati ramah lingkungan. Tujuan penelitian ini adalah untuk menguji aktivitas antifungi campuran formulasi berbagai konsentrasi kitosan (K) (0.2%, 0.3% dan 0.5%) hasil ekstraksi kitinase isolat E65 dan NaTPP (0.1%) pada ratio [5:2] terhadap penghambatan  pertumbuhan jamur Colletotrichum spp. pada cabai. Daya hambat formulasi K-TPP terhadap pertumbuhan Colletotrichum spp. masing-masing dilakukan dengan metode in vitro (pada media PDA) dan in vivo (pada buah cabai). Konsentrasi K (0.5%) : TPP (0.1%) pada rasio [5:2], menunjukkan daya hambat paling tinggi terhadap infeksi Colletotrichum spp. Penelitian lanjutan perlu dilakukan terhadap aktivitas antifungi berbagai formulasi dan konsentrasi K-TPP lainnya terhadap cabai di lapangan.
Karakterisasi dan Aktivitas Antibakteri Minyak Serai Wangi (Cymbopogon nardus (L.) Rendle) terhadap Propionibacterium acnes
Authors: Dewi Sinta Ratna , Hanifa Deasy Nur Chairin
Published: September 2022

Serai wangi (Cymbopogon nardus (L.) Rendle) merupakan tanaman berkhasiat obat dengan kandungan senyawa yang dimilikinya. Geraniol, sitronelal, dan sitronelol dalam minyak atsiri sereh wangi memiliki daya antibakteri. Tujuan penelitian ini untuk mengidentifikasi kandungan dari minyak atsiri serai wangi dan mengevaluasi efektivitasnya sebagai antibakteri terhadap penyebab jerawat Propionibacterium acnes. Penelitian ini bersifat eksperimental, dengan tahap pengujian meliputi identifikasi minyak atsiri dengan kromatografi Gas Chromatography Mass Spectrometry (GC-MS) dan uji difusi mikrobiologi dengan metode sumuran pada berbagai variasi konsentrasi minyak, yaitu 10, 25, 50, 75, dan 100%. Hasil GC-MS menunjukkan adanya tiga komponen utama dalam minyak atsiri serai wangi, sitronelal (25,21%), geraniol (3,11%), dan cyclohexane, 1-ethenyl-1-methyl-2,4-bis(1-methylethenyl)- (1,18%). Hasil uji mikrobiologi minyak serai wangi terhadap bakteri P. acnes menunjukkan bahwa diameter daya hambat yang dihasilkan oleh masing-masing konsentrasi berbeda. Daya hambat terbesar diperoleh dari konsentrasi 100% dengan diameter penghambatan sebesar 17±2,64 mm, sedangkan daya hambat terendah dihasilkan oleh konsentrasi 10% (11,7±0,57 mm). Dapat disimpulkan bahwa minyak atsiri serai wangi yang digunakan memiliki aktivitas antibakteri terhadap P. acnes.
Pengaruh Perhatian Orang Tua dan Minat Belajar Terhadap Prestasi Belajar Siswa Kelas VI SD Bontokamase Kabupaten Gowa
Authors: Suryaningsih Ita , Ernawati Ernawati
Published: September 2022

Penelitian ini merupakan penelitian ex-post facto dengan pendekatan kuantitatif yang bertujuan untuk mengetahui: (1) pengaruh perhatian orang tua siswa terhadap prestasi belajar Matematika siswa; (2) pengaruh minat belajar siswa terhadap prestasi belajar Matematika siswa Kelas VI SD Bontokamase Kab. Gowa Semester Genap Tahun Ajaran 2020/2021. Subjek penelitian ini adalah seluruh siswa Kelas VI SD Bontokamase Kab. Gowa Semester Genap Tahun Ajaran 2020/2021 yang berjumlah 31 orang tua siswa dan 31 siswa. Teknik pengumpulan data menggunakan angket dan dokumentasi. Teknik analisis data menggunakan analisis regresi sederhana untuk menjawab penelitian pertama dan kedua. Hasil penelitian ini menunjukkan bahwa: (1) terdapat pengaruh positif dan signifikan perhatian orang tua terhadap prestasi belajar Matematika siswa Kelas VI SD Bontokamase Kab. Gowa Semester Genap Tahun Ajaran 2020/2021 dengan nilai thitung > ttabel (2,896 > 2,045); (2) terdapat pengaruh positif dan signifikan minat belajar terhadap prestasi belajar Matematika siswa Kelas VI SD Bontokamase Kab. Gowa Semester Genap Tahun Ajaran 2020/2021 dengan nilai thitung > ttabel (2,558 > 2,045)
Pengaruh Sertifikasi dan Efikasi Diri Terhadap Kinerja Guru Sekolah Dasar Negeri di Gugus 21 Kecamatan Ciputat Timur
Authors: Anwar Chairul , Sudrajat Ajat , Padillah Ella
Published: September 2022

Penelitian ini bertujuan untuk mengetahui Sertifikasi dan Efikasi Diri Guru Terhadap Kinerja Guru Sekolah Dasar Negeri di Gugus 21 Kecamatan Ciputat Timur. Penelitian ini termasuk jenis penelitian deskriptif kuantitatif. Sampel dalam penelitian ini menggunakan metode Purposive Sampling sehingga menghasilkan jumlah sampel sebanyak 50 orang. Alat pengumpul data yang digunakan pada penelitian ini adalah kuesioner. Teknik analisis yang digunakan adalah metode regresi linear berganda. Hasil Penelitian menunjukkan bahwa (1) terdapat pengaruh yang signifikan variabel sertifikasi guru (X1) terhadap kinerja guru (Y) dengan nilai t hitung = 3,472 > t tabel = 2,01174. (2) terdapat pengaruh yang signifikan variabel efikasi diri (X2) terhadap variabel kinerja guru (Y) dengan nilai t hitung = 5,973 > t tabel = 2,01174. (3) terdapat pengaruh yang signifikan variabel sertifikasi guru (X1) dan variabel efikasi diri (X2) terhadap kinerja guru (Y) dengan hasil uji Fhitung 98,687 > Ftabel 3,19. Kesimpulannya adalah bahwa sertifikasi dan efikasi diri berpengaruh positif terhadap kinerja guru SDN di Wilayah Gugus 21 Kecamatan Ciputat Timur sebesar 79,9 % dan 20,1 % merupakan kontribusi variabel bebas lainnya.
Profesional, Pedagogik, Keterampilan, dan Kinerja Tutor
Authors: Kusmaladewi  , Zaidin M. Arifin
Published: September 2022

Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh kompetensi profesional, pedagogik, dan kompetensi keterampilan dasar tutorial dengan kinerja tutor PG PAUD di UPBJJ UT Makassar. Metode yang digunakan adalah kuantitatif. Populasi penelitian sebanyak 550 dan sampel ditetapkan sebesar 213 mahasiswa PG PAUD. Penetapan sampel menggunakan tabel Isaac dan Michael dan penarikan sampel menggunakan multistage rundom sampling. Pengumpulan data dilakukan dalam dua cara, yaitu menyebarkan angket tertutup secara daring dan secara luring. Analisis data yang digunakan adalah analisis korelasi product moment dari Pearson dengan fasilitas SPSS 12. Hasil penelitian menunjukkan bahwa (1) terdapat pengaruh positif yang signifikan antara kompetensi profesional (X1) dengan kinerja tutor (Y), koefisien korelasi sebesar 0,849a (2) terdapat pengaruh positif yang signifikan antara kompetensi pedagogik (X2) dengan konerja tutor (Y), koefisien korelasi sebesar 0,873a (3) terdapat pengaruh positif yang signifikan antara kompetensi keterampilan dasar tutorial (X3), dengan kinerja tutor (Y), koefisien korelasi sebesar 0,842a, dan (4) terdapat pengaruh positif yang signifikan antara kompetensi professional X1), kompetensi pedagogik (X2),dan kompetensi keterampilan dasar tutorial (X3), dengan kinerja tutor (Y) koefisien korelasi sebesar 0,908a. Artinya, pengaruh antara variabel X1, X2,X3 dengan variabel Y sangat kuat
Pengaruh Keterampilan Belajar Mandiri, Disiplin Belajar, dan Keinginan Berprestasi Terhadap Hasil Belajar Mahasiswa UPBJJ Universitas Terbuka Makassar
Authors: Jamil Jamil
Published: September 2022

Penelitian ini menujukkan keterampilan belajar mandiri, disiplin belajar, keinginan berprestasi pada mahasiswa pendidikan tinggi jarak jauh menghasilkan prestasi belajar. Belajar mandiri mahasiswa S1 PGSD. Penelitian adalah penelitian suvey bentuk analisis multivel regeresi dengan analisis jalur. Populasi penelitian ini adalah mahasiswa Program S1 PGSD program pendas UPBJJ-UT Makassar Tahun 2018 Sampel proforsional adalah Mahasiswa Program S1 PGSD yang Teknik pengambilan Sampel menggunakan undian dalam suatu Kabupaten dengan mengambil dari total mahasiswa yang semester V Tahun 2018. Hasil penelitian menjelaskan (1) keterampilan belajar mandiri berpengaruh secara signifikan tarhadap hasil belajar, (2) disiplin belajar mandiri berpengaruh secara signifikan terhadap hasil belajar, (3) Keinginan berprestasi berpengaruh secara signifikan terhadap hasil belajar, (4) Keterampilan belajar mandiri, disiplin belajar, dan keinginan berprestasi secara simultan berpengaruh positif terhadap hasil belajar
Implementasi Microlearning Berbasis Case Study Terhadap Hasil Belajar Mahasiswa Pendidikan Kimia
Authors: Yusnidar Yusnidar , Syahri Wilda
Published: September 2022

Kebutuhan karakteristik generasi zaman now terhadap pembelajaran daring menghadirkan style baru penyajian konten perkuliahan dengan microlearning. Implementasi microlearning membutuhkan model pembelajaran yang tepat berorientasi self-directed learning case study. Untuk menjawab tantangan tersebut maka dibutuhkan implementasi best practice dan pengaruhnya (efektivitas) dalam perkuliahan. Desain penelitian ini adalah Pre-Experimental Design dengan One Group Pretest-Posttest. Subjek penelitian ini adalah 25 mahasiswa mata kuliah metodologi Penelitian Pendidikan yang terdaftar pada Prodi Pendidikan Kimia Tahun Ajaran 2021-2022. Teknik pengumpulan data berupa tes dan non tes, serta dokumentasi. Data dianalisis dan diolah menjadi data interval menggunakan skala Likert. Untuk teknik analisis data yaitu menggunakan uji normalitas, homogenitas, serta T-Test. Tahapan pada penelitian ini meliputi pra eksperimen, eksperimen, dan pasca eksperimen. Hasil penelitian ini menunjukkan bahwa pada tahap pra eksperimen, peneliti mempersiapkan set perangkat perkuliahan dengan style microlearning berbasis case study. Hasil eksperimen diketahui best practice penerapan microlearning berbasis case study dengan alur: 1) introduction microlearning, concepts, tools, and student’s group; 2) teaching by traditional learning; 3) teaching by microlearning; 4) students evaluations, examination, and feedback; dan 5) comparison between traditional learning and microlearning. Pasca eksperimen dilakukan evaluasi capaian(efektivitas) implementasi micro learning berbasis case study, dengan perolehan hasil uji t sebesar 7,769 membuktikan bahwa terdapat pengaruh implementasi microlearning berbasis case study terhadap hasil belajar mahasiswa. Adapun implementasi microlearning berbasis case study dapat dilaksanakan secara blended learning untuk meminimalisir hambatan yang dihadapi mahasiswa.
Dinamika Pengelolaan Program Merdeka Belajar - Kampus Merdeka Pada Kampus Swasta
Authors: Alfikalia Alfikalia , Haryanto Handrix Chris , Widyaningsih Agustin
Published: September 2022

Penelitian ini bertujuan untuk mengidentifikasi faktor pendukung dan penghambat pelaksanaan program MBKM untuk mahasiswa serta memberikan rekomendasi terhadap pelaksanaan program MBKM untuk mahasiswa selanjutnya. Penelitian menggunakan metode penelitian kualitatif dengan pendekatan studi kasus. Data diambil dengan menggunakan metode focus group discussion (FGD) terhadap 13 orang responden yang dibagi dalam tiga sesi FGD yang berbeda, yaitu sesi FGD bersama 2 orang wakil rektor, sesi FGD bersama 3 orang dekan, dan sesi FGD bersama 8 orang ketua program studi. Data yang diambil kemudian dikodekan untuk mendapatkan tema dan alur cerita. Hasil penelitian menunjukkan bahwa faktor pendukung pelaksanaan program MBKM bagi mahasiswa adalah adanya inisiatif mahasiswa untuk terlibat, adanya mitra, arahan universitas untuk implementasi OBE yang mendukung MBKM serta dukungan pengelola fakultas dan prodi untuk mekanisme konversi nilai. Faktor penghambat yang diidentifikasi antara lain adalah kurangnya sosialisasi mengenai program, perspektif negatif terhadap program pada sebagian dosen, kurangnya panduan teknis, serta faktor keterbatasan sumber daya. Dari dinamika faktor pendukung dan penghambat dihasilkan beberapa rekomendasi kepada Kemendikbud sebagai regulator dan kepada para pengambil kebijakan di Universitas Paramadina.
L’esperienza dello shopping nelle località turistiche fra pianificazione urbana e innovazione tecnologica e organizzativa
Authors: Battilani Patrizia , Bagnaresi Davide
Published: September 2022

Questo saggio esplora il rapporto fra turismo e shopping portando l’attenzione su Riccione, una delle capitali del turismo balneare italiano. Come ricorda Dallen Timothy, la pratica del consumo non si incentra solo sui prodotti ma anche sui luoghi, contribuendo a dare forma alla città (Timothy 2005, p. 11). Nelle destinazioni turistiche, poi, gli spazi per gli acquisti si intrecciano con quelli delle altre attività ricreative, creando dinamiche spesso originali. Nel caso di Riccione la dialettica fra turismo balneare e shopping, fra spiaggia e centro commerciale trova la sua sintesi in viale Ceccarini, il lungo viale che portava dal vecchio borgo al mare e che diventa nel Novecento il fulcro dello shopping e della vita sociale. Parafrasando A. Corbin (1990) possiamo dire che la conquête du rivage a Riccione passò attraverso l’invenzione fisica e simbolica di questo viale e dello stile di vita che esso incarnava, specchio dell’abbondanza e della felicità della società dei consumi.

This essay explores the relationship between tourism and shopping focusing on Riccione, one of the most popular destinations of Italian seaside tourism. As Dallen Timothy points out, consumption is not only about products: it is also about consuming places, and it thus contributes to shaping the city (Timothy 2005, p. 11). In tourist destinations, spaces for retail are intertwined with those for other recreational activities, often creating unique dynamics. In Riccione, the dialectic between seaside tourism and shopping and between the beach and the shopping streets in the city centre is especially epitomized by Viale Ceccarini, the long avenue that once connected the old village with the sea. In the 20th century, the street became the heart of shopping and social life. Paraphrasing A. Corbin (1990), we can say that the conquête du rivage in Riccione stems from the physical and symbolic invention of this avenue and the lifestyle it embodied, mirroring the abundance and happiness of the consumer society.
Еxpeгimental Investigаtion of сutting cоnditions рarameters on surfаce roughness in aluminum alloys (AL-2024)
Authors: Huayier Abdullah Faraj
Published: September 2022

The purpose of this search is to study the main factors on the surface roughness in (AL-2024) using a CNC milling machine for an HSS tool with flat-end milling. And by using the Taguchi experience design method to conserve time and costs. To determine the optimal values ​​of surface roughness using Taguchi optimization. We then performed an analysis of variance and regression. Confirmation tests were performed to verify work. The cutting process consists of two stages; the first stage is the cutting process in the upper direction of the cutting, using a coolant and dry cutting. The second stage is the cutting process in the lower direction of the cut, using a coolant and dry cutting of the results show the best operating condition to obtain the best surface roughness of the product by using the bottom grinding, measuring the surface process surface roughness using the cutting conditions of the cutter (feeding) = 15 mm/min), (cutting depth = 1 mm) and (cutting speed = 37.68 (m/min) surface roughness (Ra = 0.17 µm) compared with the other value obtained.
Кристаллографические особенности фазовых превращений в стали 100ХН3А
Authors: Зорина М. А. , Ярков В. Ю. , Редикульцев А. А.
Published: September 2022

Исследована структура поверхностного слоя стали 12ХН3А после цементации. Определено содержание углерода в поверхностном слое, которое соответствовало стали 100ХН3А. Исследованы кристаллографические особенности распада переохлажденного аустенита в слое. Проведена ориентационная микроскопия с использованием сканирующего электронного микроскопа. Рассмотрены ориентационные соотношения, возникающие при мартенситном и перлитном превращениях в слое. Установлено, что ориентационные соотношения при γ → α'-превращении являются промежуточными между ориентационными соотношениями Курдюмова-Закса, Нишиямы-Вассермана и {113}γ → {112}α, γ → α .
Деформационное поведение при растяжении сварного соединения сталей 32Г2 и 40ХН, выполненного ротационной сваркой трением
Authors: Приймак Е. Ю. , Степанчукова А. В. , Атамашкин А. С. , Гладковский С. В. , Вичужанин Д. И.
Published: September 2022

Исследованы сварные соединения из сталей 32Г2 и 40ХН, полученные ротационной сваркой трением, и монолитный образец из стали 32Г2. Проведены испытания на растяжение сварного соединения с записью полей деформации методом корреляции цифровых изображений. Проанализировано распределение деформации в различные моменты времени. Установлено, что в разнородном сварном соединении локализация деформации на стадии предразрушения происходит в зоне термомеханического влияния стали 32Г2, при этом сварное соединение обладает достаточным запасом прочности и пластичности, соизмеримым с основным металлом из стали 32Г2.
TUMOR AXILAR DE ORIGEM NEURAL: UM ACHADO INCOMUM
Authors:   Universidade de Araraquara, Lombardi Welington , Borges Lombardi Luciana , Vicentin Silva Flávia , Ahdlie Bou Abbas Narhima , Tobal Verro Amanda , Lia Duarte Nascimento Giulia , Albaricci Carreon Fernandes Luana
Published: September 2022

Introdução: Os Schwannomas consistem em tumores benignos do tecido mole, provenientes das células de Schwann do tecido nervoso periférico e são frequentes em pacientes do sexo masculino entre 20 e 50 anos de idade. Tendem a ser solitários com crescimento lento e não agressivos, produzindo, por vezes, grandes massas. Seu aparecimento na região mamária e/ou axilar é muito raro, sendo constatados apenas 37 casos de Schwannomas em mama e axila nas bases de dados Lilacs, Pubmed e Medline. A maioria dos tumores mamários são constituídos por tecido de origem epitelial, sendo 95% dos casos divididos entre carcinomas, cistos e fibroadenomas. Relato do caso: Neste relato, descrevemos uma paciente de 53 anos, sexo feminino, relatando nódulo com sensação de queimação em axila direita e irradiação para mama direita. A mamografia e a ultrassonografia mamária mostravam a presença de nódulo em axila direita, de difícil diferenciação com linfadenomegalia axilar. Conclusão: A punção aspirativa com agulha fina (PAAF) foi inconclusiva e a core-biopsy mostrou proliferação mesenquimal fusocelular com características celulares benignas padrão nervoso, do tipo Neurilenoma/Schwannoma. Optou-se, a princípio, por conduta expectante porém, após seis meses, observou-se aumento do nódulo e da sintomatologia clínica, sendo indicada a exérese completa da lesão. Palavras-chave: Células de Schwann. Axila. Neurilema.
ABSCESSO HEPÁTICO PIOGÊNICO SECUNDÁRIO A PERFURAÇÃO GÁSTRICA POR CORPO ESTRANHO
Authors:   Universidade de Passo Fundo, Costa Beber Lemanski Francisco , Delatorre Kamijo Daniel , Kohl Hammacher Gabriela , Zanatta de-Freitas Bruna , Cattapan Piovesan Eduardo , Moacir Mesquita Paulo ,   Hospital São Vicente de Paulo
Published: September 2022

Introdução Abscesso hepático secundário a perfuração gástrica por ingestão de corpo estranho é um trauma raro e de difícil diagnóstico, com poucos casos descritos na literatura. Relato do caso: Paciente de 60 anos procura emergência com dor epigástrica há 15 dias, náuseas, vômitos biliosos e inapetência. Exames de imagem evidenciaram dois abscessos hepáticos em lobo esquerdo do fígado e espessamento do corpo e antro gástrico. Realizada Endoscopia Digestiva Alta diagnóstico e terapêutica que identificou a presença de corpo estranho - palito de dentes - transfixado em antro gástrico. Conclusão: Casos como este são raros na literatura e são relevantes por se tratar de um diagnóstico diferencial raro de abdome agudo. O tratamento de abscessos hepáticos piogênicos inclui drenagem e antibioticoterapia. Palavras-chave: Abscesso Hepático Piogênico. Abdome Agudo. Endoscopia Gastrointestinal. Dor Abdominal.
TUMOR MÜLLERIANO MISTO MALIGNO DE COLO UTERINO: UM RARO ACHADO
Authors:   Universidade de Araraquara, Lombardi Welington , Borges Lombardi Luciana , Vicentin Silva Flávia , Marcinkevicius Jéssica Aparecida , Von Zuben Moreira Juliana , Gonçalves Gabriela , Fonseca Sonetti Mariana , Macedo de Oliveira Campos Luna , Afonso Pastori Manoela
Published: September 2022

Introdução: O Tumor Mülleriano Misto Maligno ou carcinossarcoma uterino é uma neoplasia rara, porém, muito agressiva, de prognóstico sombrio e que afeta, em sua maioria, pacientes na pósmenopausa a partir da sexta década de vida. São originários do mesoderma mülleriano e apresentam componentes epitelial e glandular malignos. Dentre as manifestações clínicas, o sangramento pósmenopausa e a presença de massa uterina projetando-se pela abertura cervical externa são as mais comuns, mas também pode apresentar dor pélvica, dispareunia e até perda de peso. O diagnóstico é de difícil realização, sendo necessária a correlação entre história clínica, exame físico ginecológico, exames complementares de imagem, exame anatomopatológico e imunoistoquímica. Relato do caso: Relatamos o caso de uma paciente de 56 anos que apresentava, como queixa principal, sangramento uterino pós-menopausa, de caráter progressivo e contínuo, associado à fraqueza e dor em cólica de leve intensidade. O resultado da histeroscopia mostrou uma neoplasia maligna padrão bifásico do tipo carcinossarcoma e o exame anátomo-patológico definitivo da histerectomia total com salpingooferectomia bilateral e linfadenectomia pélvica e periaórtica, em conjunto com a imunoistoquímica confirmou o diagnóstico de carcinossarcoma com componente heterólogo de condrossarcoma (Tumor Mülleriano Misto Maligno), com estadiamento pT3a pN1 pMx. Após sete meses do tratamento cirúrgico, a paciente encontra-se em seguimento clínico sem sinais de recidiva da doença. Palavras-chave: Hemorragia Uterina. Carcinossarcoma. Neoplasias Uterinas.
El contexto necropolítico y las cifras del desplazamiento interno forzado en México
Authors: Ruiz Sánchez Joel
Published: September 2022

El objetivo de este artículo es analizar, desde el concepto de necropolítica, la relación entre violencia delictiva y el desplazamiento interno forzado en México en los últimos años, periodo en el que se incrementó la presencia de grupos de la delincuencia organizada en el país, coincidiendo con la puesta en marcha de una estrategia de seguridad basada en el combate directo de las organizaciones criminales. Se examina las dimensiones del desplazamiento interno forzado propiciado por esta violencia a partir de cifras reportadas por organizaciones defensoras de derechos humanos. A partir de ello se concluye que existe una invisibilización jurídica, política y social que no ha permitido dimensionar la magnitud del problema ni tampoco ha posibilitado la creación de instrumentos de política pública para atender a los desplazados.
Evaluación de productividad en estanques para cultivo de alimento vivo
Authors: Castro Camaño Merari , Díaz Vargas Migdalia , García Rodríguez Judith , Arce Uribe Elsah
Published: September 2022

El fitoplancton y el zooplancton tienen un rol importante en los ecosistemas acuáticos, la continuidad de especies depende del equilibrio entre los diferentes niveles de la cadena trófica, así como el desarrollo y supervivencia de larvas y juveniles de invertebrados y vertebrados. Por ello, el objetivo de esta investigación es evaluar la productividad primaria y secundaria en sistemas controlados, permitiendo calcular las tasas de crecimiento del fitoplancton y del zooplancton. Estimando el nivel de productividad que puede sustentar el cultivo de alimento vivo. La evaluación se realizó en un periodo de dos semanas en estanques con fertilización orgánica.
Penerapan Model Pembelajaran Thinking Aloud Pair Problem Solving (TAPPS) Terhadap Kemampuan Pemecahan Masalah Matematis Siswa SMP Ditinjau dari Self Efficacy
Authors: Aulia Tasya , Nurcahyono Novi Andri , Agustiani Nur
Published: September 2022

Penelitian ini bertujuan untuk mengetahui pembelajaran menggunakan model pembelajaran TAPPS dan model pembelajaran langsung terhadap kemampuan pemecahan masalah matematis siswa ditinjau dari self-efficacy. Metode yang digunakan pada penelitian ini adalah Quasi Experimental Design dengan desain Posttest-Only Group Design dan rancangan desain faktorial . Populasi pada penelitian ini adalah seluruh siswa kelas VIII SMP Negeri 1 Kota Sukabumi. Pengambilan sampel menggunakan Probability Sampling dan penentuan sampelnya Cluster Random Sampling. Intrumen yang digunakan diantaranya lima butir soal kemampuan pemecahan masalah matematis pada materi statistika, angket/kuesioner self-efficacy, dan lembar observasi. Teknik analisis data menggunakan anava dua jalur sel tak sama. Hasil penelitian menunjukkan: (1) model pembelajaran TAPPS lebih baik dari model pembelajaran langsung terhadap kemampuan pemecahan masalah matematis, (2) kemampuan pemecahan masalah matematis siswa dengan kategori self-efficacy tinggi lebih baik dari siswa dengan kategori self-efficacy sedang dan rendah, serta kemampuan pemecahan masalah matematis siswa dengan kategori self-efficacy sedang lebih baik dari siswa dengan kategori self-efficacy rendah, (3) pada model pembelajaran TAPPS dan model pembelajaran langsung, kemampuan pemecahan masalah matematis siswa dengan kategori self-efficacy tinggi lebih baik dari siswa dengan kategori self-efficacy sedang dan rendah, serta kemampuan pemecahan masalah matematis siswa dengan kategori self-efficacy sedang lebih baik dari siswa dengan kategori self-efficacy rendah (4) pada masing-masing kategori self-efficacy, model pembelajaran TAPPS lebih baik dari model pembelajaran langsung terhadap kemampuan pemecahan masalah matematis. Penelitian ini diharapkan dapat memberikan konstribusi dalam perkembangan keilmuan khususnya mengenai model pembelajaran TAPPS dan kemampuan pemecahan masalah matematis.
The politics of disconnection on social media: A systematic review of politically motivated unfriending
Authors: Zhu Qinfeng
Published: September 2022

Disconnectivity is essential to our understanding of social media including its political implications and democratic potentials. In recent years, there has been a surging interest in the politics of disconnection on social media, commonly terms “politically motivated unfriending”. In this study, we conduct a systematic review of 28 articles (34 studies) on this topic. Combining content analysis with inductive thematic coding, we provide a robust synthesis of its contexts, trend, scale, and tendencies. We also identified three recurring themes with regard to the associated meanings; politically motivated unfriending is understood as selective avoidance under the normative framework of public sphere, self-care following the norm of personal spaces, and a means to safe spaces within the social structure of unequal power differentials. We discuss the democratic paradox of social media through the lens of disconnectivity and offer recommendations for future research.
Differential expression of SERPINA3 in amyotrophic lateral sclerosis.
Authors: Mamoor Shahan
Published: September 2022

Neurodegenerative diseases that affect the motor neurons, including amyotrophic lateral sclerosis (ALS), have little treatment options and are generally rapidly fatal (1, 2). We harnessed the power of unbiased, whole transcriptome differential gene expression analysis, utilizing primary patient cells and tissues to discover genes whose expression defines ALS using published data (3, 4). We found significant differential expression of SERPINA3, encoding serpin family A member 3, in the primary motor neurons of patients with ALS. SERPINA3 was also differentially expressed in the skeletal muscle of patients with ALS. SERPINA3 transcript was present at significantly higher levels in ALS patient motor neurons as compared to control motor neurons. These analyses will begin to define the transcriptional landscape of ALS.
Differential expression of APOC1 in amyotrophic lateral sclerosis.
Authors: Mamoor Shahan
Published: September 2022

Neurodegenerative diseases that affect the motor neurons, including amyotrophic lateral sclerosis (ALS), have little treatment options and are generally rapidly fatal (1, 2). We harnessed the power of unbiased, whole transcriptome differential gene expression analysis, utilizing primary patient cells and tissues to discover genes whose expression defines ALS using published and public data (3, 4). We found significant differential expression of APOC1, encoding apolipoprotein C1, in the motor neurons of patients with ALS. APOC1 was also differentially expressed in the induced pluripotent stem cell (iPSC)-derived motor neurons of patients with ALS. APOC1 transcript was present at significantly higher levels in ALS patient motor neurons as compared to control motor neurons. These analyses will begin to define the transcriptional landscape of ALS.