bluuebunny/crossref_metadata_2025 huggingface dataset:
Antibacterial Efficacy of Silver or Arsenic Doped Polymer Composites Against Several Kinds of Bacteria
Authors:   Laboratory of Advanced Polymers & Optimized Materials (LAPOM), Department of Materials Science and Engineering and Department of Physics, University of North Texas, 3940 North Elm Street, Denton, TX 76207, USA, Brostow Witold , Gahutishvili Marina ,   Laboratory of Advanced Polymers & Optimized Materials (LAPOM), Department of Materials Science and Engineering and Department of Physics, University of North Texas, 3940 North Elm Street, Denton, TX 76207, USA,   Department of Chemistry, Ivane Javakhishvili University, 3 Ilya Chavchavadze Ave., 0179 Tbilisi, Georgia, Wren Anthony W. ,   Inamori School of Engineering, Alfred University, Alfred, NY, USA, Keenan Timothy J. ,   Inamori School of Engineering, Alfred University, Alfred, NY, USA, Yatongchai Chokchai ,   Inamori School of Engineering, Alfred University, Alfred, NY, USA, Hnatchuk Nathalie ,   Laboratory of Advanced Polymers & Optimized Materials (LAPOM), Department of Materials Science and Engineering and Department of Physics, University of North Texas, 3940 North Elm Street, Denton, TX 76207, USA, Singh Vijay ,   Department of Biological Sciences, University of North Texas, Denton. TX, USA
Published: February 2022

Structure and several properties of AgNO3 and As2O3 doped polymer composites have been investigated, including their antibacterial activity against E. coli, S. aureus, C. albicans and S. epidermidis. New silver or arsenic doped polymer composites have been characterized by an X-ray diffraction (XRD), a scanning electron microscopy combined with an energy dispersive X-ray spectroscopy (SEM/EDS) and ion release studies. The antibacterial evaluation of each of the composite samples was conducted using S. aureus in the liquid broth culture, with 10, 20 and 30 % of liquid extract added to the bacterial culture. Control S. aureus stocks were used for comparison at each time period and were recorded at 100 % at each time period. For samples with the PLA plasticizer the bacterial viability was significantly reduced for each composition containing Ag/As and was similar for each dosage concentration.
Synthesis and Properties of Phosphorus-Containing Pseudo-Poly(Amino Acid)sof Polyester Type Based on N-Derivatives of Glutaminic Acid
Authors:   Lviv Polytechnic National University, 12 S. Bandery St., Lviv 79013, Ukraine, Stasiuk Anna , Fihurka Nataliia ,   Lviv Polytechnic National University, 12 S. Bandery St., Lviv 79013, Ukraine, Vlizlo Vasyl ,   Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies, 50 Pekarska St., Lviv79010, Ukraine, Prychak Sofiia ,   Lviv Polytechnic National University, 12 S. Bandery St., Lviv 79013, Ukraine, Ostapiv Dmytro ,   Institute of Animal Biology NAAS, 38 V. Stusa St., Lviv 79034, Ukraine, Varvarenko Serhii ,   Lviv Polytechnic National University, 12 S. Bandery St., Lviv 79013, Ukraine, Samaryk Volodymyr ,   Lviv Polytechnic National University, 12 S. Bandery St., Lviv 79013, Ukraine
Published: February 2022

Poly(phosphoeter)s (PPE)s are a class of polymers possessing a high chemical functionality and biodegradability. Novel, glutamic acid based poly(phosphoeter)s were synthesized by the Steglich reaction. The developed synthetic approach allows controlling the composition and the structure of PPEs, and therefore their physical and colloidal properties. The studies on solubilization and cytotoxicity in vitro proved the potential of PPEs for drug delivery applications.
Effect of Diaminosilane Derivative on Thermal and Swelling Behaviour of Acrylic Acid Based Hydrophilic Composites
Authors:   Institute of Macromolecular Chemistry of the National Academy of Sciences of Ukraine, 48 Kharkivs’ke Sh., 02160 Kyiv, Ukraine, Slisenko Olga , Bei Iryna ,   Institute of Macromolecular Chemistry of the National Academy of Sciences of Ukraine, 48 Kharkivs’ke Sh., 02160 Kyiv, Ukraine, Budzinska Vira ,   Institute of Macromolecular Chemistry of the National Academy of Sciences of Ukraine, 48 Kharkivs’ke Sh., 02160 Kyiv, Ukraine
Published: February 2022

Organic-inorganic hydrophilic composites based on sodium polyacrylate (PAANa) and poly-N-(2-aminoethyl)-3-aminopropyltrimethoxysilane (PAPTMS) showed the improved swelling capacity at incorporation of PAPTMS. Changing of non-Fickian to Super case II swelling behaviour is observed at 20 wt % PAPTMS content. Enhancing of thermal stability and heat-resistance index of composite hydrogels compared to PAA is shown.
Studying the Effect of Butanol on the Anode Behavior of Copper in Phosphoric Acid Solutions
Authors:   National Technical University “Kharkiv Polytechnic Institute” 2Kyrpychova St., Kharkiv61002, Ukraine, Sil'chenko Darja , Reznichenko Ganna ,   National University of Civil Defence of Ukraine 94Chernyshevska St.,Kharkiv61023, Ukraine, Maksimenko Olena ,   National Technical University “Kharkiv Polytechnic Institute” 2Kyrpychova St., Kharkiv61002, Ukraine, Pancheva Hanna ,   National Technical University “Kharkiv Polytechnic Institute” 2Kyrpychova St., Kharkiv61002, Ukraine, Mykhailova Evgeniia ,   Simon Kuznets Kharkiv National University of Economics 9АNaukyAve., Kharkiv61166, Ukraine, Pylypenko Oleksiy ,   O.M.BeketovNationalUniversityofUrbanEconomyinKharkiv, 17 MarshalBazhanovSt.,Kharkiv 61002, Ukraine
Published: February 2022

The anode behavior of the copper electrode immersed in butanol phosphate electrolytes has been studied. The polarization dependences of the electrode allowed us to detect the sections that correspond to the passive and active states of copper and we also established the zone of the combined behavior of the processes of the copper dissolution and oxygen release. It was also established that a butyl alcohol contributes to an abrupt decrease in current densities in the entire region of anode potentials. The addition of butanol conditions the disappearance of current oscillations that can be seen on polarization dependences in phosphate solutions. Evidently, a decrease in the current densities is a consequence of the butanol adsorption on the copper surface and its participation in the formation of passive films. The specific features of the copper passivation in butanol phosphate electrolytes are characterized by the appearance of the explicit current peak that separates active and passive state zones at the ratio of C4H9OН:H3PO4 =1:3.As the alcohol-to-acid ratio increases, the peak gradually decreases. The addition of butanol has no determining influence on the potential value that corresponds to the started oxygen release. Currentefficiency values for the copper dissolution depend on the anode current density ja and the electrolyte composition. An increase in ja results in a decreased current efficiency value. An increase in the С4Н9ОН content has a similar action. Maximum current efficiency values are observed at ja=0.5–2 А∙dm-2, and they correspond to the active copper state. The dependences obtained for the copper dissolution rate allowed us to establish that υрalso increases with an increase in the current density up to ja=20 А∙dm-2. The copper treatment quality depends on the current density and the electrolyte composition. The solutions with the ratio of C4H9OН:H3PO4=2:1fail to provide a high quality treatment; the surface is not glossy and it has grinding traces. A high-quality treatment is observed in the electrolytes with the ratio of C4H9OН:H3PO4 =1:2 and lower. The electrochemical polishing in such solutions results in the glossy copper surface with the smoothed relief and it has no polishing traces.
Physical and Mathematical Models of Target Component Extraction from Rectlinear Capillaries
Authors:   Lviv Polytechnic National University 12, S.Bandery St., 79013 Lviv, Ukraine, Gumnitsky Jaroslav , Venger Lubov ,   Lviv Polytechnic National University 12, S.Bandery St., 79013 Lviv, Ukraine, Sabadash Vira ,   Lviv Polytechnic National University 12, S.Bandery St., 79013 Lviv, Ukraine, Symak Dmytro ,   Lviv Polytechnic National University 12, S.Bandery St., 79013 Lviv, Ukraine, Hyvlud Anna ,   Lviv Polytechnic National University 12, S.Bandery St., 79013 Lviv, Ukraine, Gnativ Zoriana ,   Lviv Polytechnic National University 12, S.Bandery St., 79013 Lviv, Ukraine
Published: February 2022

The extraction of the solid component from the rectilinear capillary has been investigated. The presence of two extraction zones (convective and molecular diffusion) was confirmed. The effect of the system vacuumizing on the extraction rate has been studied. The convection zone during vacuumizing was found to be increased due to the appearance of the vapor phase bubbles. The mass transfer coefficients for the convective zone have been determined. A mathematical model of the molecular diffusion stage is given, taking into account the nonlinear change in the component concentration in the liquid due to the displacement of the extraction boundary. The molecular diffusion coefficients in the capillary have been determined.
Production of Bitumen Modified with Low-Molecular Organic Compounds from Petroleum Residues.4. Determining the Optimal Conditions for Tar Modification with Formaldehyde and Properties of the Modified Products
Authors:   Lviv Polytechnic National University 12 S.Bandery St., Lviv 79013, Ukraine, Gunka Volodymyr , Bilushchak Halyna ,   Lviv Polytechnic National University 12 S.Bandery St., Lviv 79013, Ukraine, Prysiazhnyi Yuriy ,   Lviv Polytechnic National University 12 S.Bandery St., Lviv 79013, Ukraine, Demchuk Yuriy ,   Lviv Polytechnic National University 12 S.Bandery St., Lviv 79013, Ukraine, Hrynchuk Yurii ,   Lviv Polytechnic National University 12 S.Bandery St., Lviv 79013, Ukraine, Sidun Iurii ,   Lviv Polytechnic National University 12 S.Bandery St., Lviv 79013, Ukraine, Shyshchak Olena ,   Lviv Polytechnic National University 12 S.Bandery St., Lviv 79013, Ukraine, Bratychak Michael ,   Lviv Polytechnic National University 12 S.Bandery St., Lviv 79013, Ukraine
Published: February 2022

The effect of factors on the process of chemical modification of tar with formaldehyde using a sulfuric acid as the catalyst has been studied. By using experimental results, the adequate statistical-mathematical (ESM) model has been developed. Based on this model, the optimal values on the process of chemical modification of tar with formaldehyde using a sulfuric acid as the catalyst have been identified, bringing about optimal penetration value and softening point of the modified tars. Data predicted on the basis of the ESM model were compared with empirical evidence about modified tars preparation.
Pengaruh Penerapan Media Pembelajaran Canva dengan Pendekatan Saintifik Terhadap Hasil Belajar dasar Listrik dan Elektronika
Authors: Rahmayanti Dela , Jaya Putra
Published: February 2022

Penilitian ini dilaksanakan untuk mengetahui seberapa berpengaruhnya penerapan media pembelajaran canva dengan pendekatan saintifik terhadap hasil belajar peserta didik Kelas X Teknik Pendingin dan Tata Udara (TPTU) di SMK Negeri 3 Kota Pariaman mata pelajaran Dasar Listrik dan Elektronika. Metode yang digunakan adalah metode penelitian eksperimen dengan bentuk desain eksperimen yang digunakan dalam penelitian ini adalah Quasi Experimental Design dengan Nonequivalent Control Group Design. Seubjek dari penelitian ini terdiri dari 2 kelas yaitu kelas X TPTU A sebagai kelas kontrol dan kelas X TPTU B sebeagai kelas eksperimen. Pengambilan sampel ini dilakukan dengan purposive sampling atau berdasarkan dengan tujuan tertentu untuk kesetaraan kedua kelas. Pengambilan data dilakukan dengan menggunakan posttest di akhir pembelajaran. Hal ini dinyatakan dari hasil belajar penelitian pada kelas eksperimen memperoleh rata-rata 82,50 sedangkan kelas kontrol memperoleh rata-rata 74,18. Berdasarkan uji hipotesis didapatkan nilai thitung2,99 > ttabel2,672 maka dapat dikatakan terdapat pengaruh signifikan dengan menerapkan media pembelajaran canva dengan pendekatan saintifik.Kata kunci : Media Pembelajaran Canva, Pendekatan Saintifik, Hasil Belajar, Quasi Experimental design, Nonequivalent Control Group Design
US Dollar/IQ Dinar Currency Exchange Rates Time Series Forecasting Using ARIMA Model
Authors: Mohammed Parzhin A. , Obed Sami A. , Ali Israa M. , Kadir Dler H.
Published: February 2022

The use of currency exchange estimation as a tool for economic planning is being researched as a technique for gaining economic stability. The main purpose of this study is to use the ARIMA model to forecast monthly US dollar and IQ dinar exchange rates. The information was gathered from January 2010 to December 2020. We got the information from the website (sa.investing.com). The minimum value of Root Mean Square Error (RMSE) and the mean absolute error are used to select the optimal model (MAE). ARIMA was found to be the best model for the US Dollar/IQ Dinar series (2, 1,0). This is the forecasted meaning for the future of this exchange rate time series, which indicates a perpetual increase continuously in the next two years. Statgraphics version 15 was the statistical software package utilized to complete this project.
PENGARUH KARAKTERISTIK MULTINASIONALITAS DAN THIN CAPITALISATION TERHADAP EFFECTIVE TAX RATE
Authors: Hananto Hari
Published: February 2022

The company always tries to minimize tax payments through various ways. In particular, a multinational company, has more ability to do tax avoidance. One technique that can be used by multinational corporations is to transfer corporate income from one jurisdiction to another that has a lower corporate income tax rate to minimize overall group tax payments (PWC, 2011). This mechanism can result in superior tax payments for multinational companies that have subsidiaries or affiliated companies (Klassen & Laplante, 2012; Dyreng & Lyndsey, 2009). In addition to income transfer, multinational companies can also regulate their capital composition in order to take advantage of the ease of obtaining capital in a jurisdiction. This study aims to show empirical evidence about the effect of the nature of multinationality (multinational companies) and the existence of capitalization (thin capitalization) on the possibility of tax avoidance. The population sample used in this study were companies listed on the IDX during the 2017-2019 period. The results show that multinational companies have an effect on increasing tax avoidance efforts. Meanwhile, thin capitalization has no effect on efforts to increase tax avoidance.
STRES PENGASUHAN, PENILAIAN IBU TERHADAP COVID-19, DAN PENGASUHAN SUPORTIF
Authors: Amalia Rizky Putri , Abidin Fitri Ariyanti , Lubis Fitriani Yustikasari
Published: February 2022

Ibu, sebagai pengasuh utama anak, dapat mengalami stres pengasuhan yang kemudian berdampak pada menurunnya pengasuhan yang suportif kepada anak. Penelitian ini bertujuan untuk menganalisis pengaruh penilaian negatif ibu mengenai Covid-19 terhadap hubungan antara stres pengasuhan dengan pengasuhan suportif. Desain penelitian ini adalah crossectional, dengan pendekatan penelitian kuantitatif. Populasi penelitian ini merupakan ibu yang memiliki anak berusia 2-18 tahun. Dengan teknik convenience sampling, diperoleh responden ibu sebanyak 272 orang, yang berusia 21-54 tahun (M=38,49, SD=6,59). Pengambilan data dilakukan menggunakan platform kuesioner online. Analisis regresi linear menunjukkan bahwa stres pengasuhan berpengaruh negatif terhadap pengasuhan suportif. Uji moderasi dengan Hayes PROCESS menunjukkan bahwa penilaian ibu mengenai dampak Covid-19 dalam pemenuhan kebutuhan dapat memperkuat hubungan negatif antara stres pengasuhan dan pengasuhan suportif pada kadar yang rendah, sedang, maupun tinggi. Dengan demikian, stres pengasuhan yang dialami ibu berdampak pada rendahnya pengasuhan suportif pada anak, dan pengasuhan suportif ibu akan lebih rendah apabila ibu menilai dirinya kesulitan memenuhi kebutuhan keluarga akibat pandemi. Berdasarkan hasil penelitian ini, diperlukan tindakan preventif untuk mencegah peningkatan stres pengasuhan ibu serta untuk mempertahankan penilaian positif ibu terhadap Covid-19 sebagai upaya meningkatkan pengasuhan yang suportif.
Strategi Bank Dalam Mengatasi Non Performing Financing (Npf) Pada Masa Pandemi Covid 19 (Studi Kasus Bank Sumut Capem Karya)
Authors: Mrp Sri Rahayuni
Published: February 2022

Penelitian ini bertujuan untuk mengetahui bagaimana strategi bank dalam mengatasi Non Performing Financing (NPF) yang difokuskan pada satu masalah yaitu bagaimana strategi bank dalam mengatasi Non Performing Financing (NPF). Metode penelitian yang digunakan dalam penelitian ini adalah penelitian kualitatif dengan pendekatan deskriptif. Informan dalam penelitian ini terdiri dari satu informan dari Kantor Cabang Pembantu Bank Syariah Medan Sumatera Utara yaitu bagian Operasional. Data yang digunakan adalah data primer yang diperoleh melalui wawancara langsung dengan informan.
Collaboration after Conflict: A Lesson from Collaborative Action in Customary Land Tenure Conflicts in Lombok, Indonesia
Authors: Nindyatmoko Aryogito , Setyowati Kristina , Haryanti Rina Herlina
Published: February 2022

Land tenure conflicts in Lombok occured due to social interactions between community and state institutions. These were triggered by the unilateral claims of some of the villagers of Bebidas who acted on behalf of indigenous communities to take back what they believed to be their ancestral land in the Mount Rinjani National Park area. This paper analyzes how stakeholders generated conflict resolution efforts that emphasized inclusive efforts by collaborative action through dialogue based on collaborative governance theory. Data were obtained from interviews with several key informants from various levels of government, as well as members of the Bebidas village community and NGO representatives. Documentation and observation were also carried out to obtain data validity over sustained data collection and analysis process. Findings show that conflict resolution resulted from a long-term process that built up from dialogues involving various stakeholders, which encouraged the emergence of Mutual Agreements and Memorandum of Understanding as milestones to end conflicts. This helped to initiate peaceful relations. Findings suggest that capacity building, promoting awareness, and technical training to support rights and livelihoods on an ongoing basis help to address conflicts rooted in knowledge imbalances. In addition, expanding conservation partnership through community empowerment and ecosystem restoration programs assist in maintaining resources and supporting economic benefits underpin ideals of sustainable longer term uses of the Rinjani.
Pseudokrup – ostre zapalenie krtani
Authors: Sybilski Adam J.
Published: February 2022

Ostre zapalenie krtani to grupa chorób krtani, tchawicy i oskrzeli. Jest ono szczególnie niebezpieczne dla dzieci – z uwagi na ich specyficzne uwarunkowania anatomiczne i fizjologiczne, które powodują, że stridor może występować tylko wtedy, kiedy dziecko płacze lub się porusza. Najczęstszymi czynnikami etiologicznymi ostrego zapalenia krtani i tchawicy są wirusy. Do typowych objawów należą: stridor, kaszel (szczekający, foczy), chrypa, uruchomienie dodatkowych mięśni oddechowych. Rozpoznanie symptomów pseudokrupu opiera się na badaniu przedmiotowym i podmiotowym. Celem postępowania jest ocena nasilenia objawów na podstawie skali Westleya (od tego bowiem zależy dalsze postępowanie i leczenie), wyodrębnienie dzieci z ciężką postacią choroby oraz szybką progresją zmian oraz rozpoczęcie farmakoterapii. W leczeniu farmakologicznym stosuje się glikokortykosteroidy (w nebulizacji lub doustnie) oraz adrenalinę (w nebulizacji). Obecnie w terapii nebulizacyjnej są preferowane inhalatory siateczkowe, które są wydajniejsze i wygodniejsze w użyciu.
PERBEKALAN MELAUT PADA UNIT PENANGKAPAN BOUKE AMI DI PELABUHAN PERIKANAN NUSANTARA MUARA ANGKE JAKARTA
Authors: Ikhsan Fidratul , Astarini Julia Eka , Purwangka Fis
Published: February 2022

Penyediaan perbekalan melaut merupakan salah satu aktivitas ekonomi yang penting dalam menentukan usaha penangkapan ikan dan pengolahan hasil tangkapan terutama pada kapal yang melaut dalam waktu yang relatif lama. Kapal yang melaut pada waktu yang lama sering mengalami kekurangan perbekalan, sehingga mempengaruhi kegiatan penangkapan bahkan hasil tangkapan. Penelitian ini dilaksanakan pada bulan Februari-Maret 2020 yang bertempat di Pelabuhan Perikanan Nusantara Muara Angke, Kota Jakarta, Provinsi DKI Jakarta yang bertujuan untuk mengidentifikasi jenis kebutuhan perbekalan pada unit penangkapan bouke ami, menghitung jumlah aktual kebutuhan perbekalan pada unit penangkapan bouke ami dan menentukan sistem penanganan perbekalan pada unit penangkapan bouke ami. Metode pengumpulan data yang digunakan adalah metode survei dengan teknik wawancara dan kuesioner. Teknik pengambilan sampel menggunakan metode purposive sampling. Data yang didapatkan dianalisis secara deskriptif kualitatif dan kuantitatif. Hasil penelitian menunjukkan bahwa jenis kebutuhan perbekalan pada unit penangkapan bouke ami yaitu, solar, oli, minyak, air bersih, beras, gula pasir, wortel, kol, labu, teh, kopi, mie instant, obat-obatan, gas, dan rokok. Jumlah aktual kebutuhan perbekalan unit penangkapan bouke ami disebabkan oleh faktor jumlah ABK, ukuran GT kapal, daerah penangkapan ikan, dan lama melaut. Sistem penanganan masing-masing perbekalan beras, sayuran, mie instan disimpan di palka berpendingin agar tidak mudah busuk, sedangkan oli, solar diletakkan di belakang kapal, dan obat-obatan, gula, kopi, dan rokok diletakkan di kamar nakhoda.
DISTRIBUSI UKURAN IKAN HASIL TANGKAPAN PURSE SEINE KM. BINTANG SAMPURNA-B DI WPP 572 DAN 573
Authors: Bramana Aditya , Khikmawati Liya Tri , Satyawan Noar Muda , Mukti Ario Anggara
Published: February 2022

Sektor perikanan memiliki peranan strategis dalam pembangunan nasional. WPP 572 dan 573 merupakan perairan luas dan berada di Samudera Hindia. Wilayah perairan ini memiliki potensi ikan yang cukup besar, utamanya dari kelompok ikan pelagis seperti cakalang, tuna mata besar, layang, madidihang, kembung, dan tongkol. Namun dalam segi pemanfaaatan sumberdaya ikan, WPP 572 dan 573 saat ini sudah mengalami masa fully-exploited khususnya untuk ikan pelagis kecil dan besar (KEPMEN KP 2017). Salah satu cara dalam mengatasi kondisi fully-exploited yaitu dengan pengelolaan pembatasan ukuran ikan yang layak tangkap. Metode yang digunakan dalam penelitian ini adalah metode deskriptif. Sampel yang diambil berdasarkan metode purposive sampling yakni dengan mengambil beberapa jenis ikan hasil tangkapan sesuai jenisnya masing-masing yang dianggap dapat mewakili keseluruhan ikan yang sudah ditangkap pada setiap setting. Jumlah sampel ikan menyesuaikan dengan kapasitas loyang besar tersebut yang berisikan 18-20 ekor untuk ikan besar, dan 50-100 ekor ikan kecil. Jumlah keseluruhan hasil tangkapan yang telah dilakukan mendapat hasil sebanyak 75.878 kg. Hasil tangkapan utama sebanyak 57.435 kg dan hasil tangkapan sampingan sebanyak 18.443 kg. Persentase hasil tangkapan cakalang (72% layak, 28% tidak layak), baby tuna (100% tidak layak), yellow fin tuna (51% layak, 49% tidak layak), layang, tongkol, lemadang, dan ikan lainnya (100% layak). Keseluruhan ikan hasil tangkapan di KM Bintang Sampurna-B sesuai dengan jumlah sampel yang diukur, menunjukkan angka sebanyak 74% layak tangkap dan 26% tidak layak tangkap.
ANALISIS MORFOMETRIK DAN INDEKS KONDISI KERANG BATIK (Paphia undulate) DI PERAIRAN CIREBON
Authors: Nurkhasanah Devi , Elinah Elinah , Nugraha Eulis Henda
Published: February 2022

Perairan Kabupaten Cirebon merupakan salah satu wilayah yang banyak menghasilkan kekerangan, yang bernilai ekonomis tinggi dan banyak dikonsumsi oleh masyarakat. Tujuan dari penelitian ini adalah untuk menganalisis pertumbuhan dan indeks kondisi kerang batik yang ada di Perairan Cirebon. Metode penelitian ini dilakukan secara deskriptif, melalui pengumpulan data dengan menggunakan metode survei. Penelitian ini dilakukan pada bulan Februari-April 2020 di perairan Cirebon. Lokasi diperairan Cirebon dibagi menjadi tiga yang dianggap mewakili masing-masing wilayah, perairan Mundu, perairan Bondet, dan perairan Playangan. Metode analisis yang digunakan adalah analisis morfometrik dan indeks kondisi kerang. Hasil penelitian menujukkan bahwa pertumbuhan kerang batik bersifat allometrik negatif dan indeks kondisi kerang dalam keadaan kecil dan sedang.
IDENTIFIKASI PARASIT PADA IKAN LELE (Clarias sp.) DI KOLAM BUDIDAYA IKAN KABUPATEN BANGKA
Authors: Tuwitri Rani , Irwanto Riko , Kurniawan Andri
Published: February 2022

Keberadaan parasit menimbulkan efek negatif terhadap ikan lele (Clarias sp.) berupa penyakit pada inangnya. Parasit berdasarkan lingkungan atau habitatnya dibedakan menjadi dua, yaitu ektoparasit (parasit yang hidup pada permukaan tubuh luar inang) dan endoparasit (parasit yang hidup di dalam tubuh inang). Penelitian ini bertujuan untuk mengidentifikasi jenis dan menganalisis tingkat prevalensi parasit yang menginfeksi ikan lele di tambak Budidaya Ikan Desa Balunijuk dan Desa Petaling Banjar. Penelitian ini dilakukan pada bulan Oktober-November 2020. Metode yang digunakan adalah metode purposive sampling. Pengambilan sampel ikan dilakukan pada dua stasiun, dengan masing-masing stasiun dilakukan sebanyak dua kali pengambilan sampel. Sampel ikan diambil dua puluh ekor pada setiap stasiun. Hasil penelitian menunjukkan bahwa terdapat 4 filum parasit yang teridentifikasi, diantaranya Filum Ciliophora terdiri dari Vorticella sp. dan Stylonychia sp., Filum Protozoa terdiri dari Blastodiniidae. Filum Platyhelminthes terdiri dari Dactylogyrus sp., Gyrodactylus sp., dan Ligula intestinalis., dan Filum Nemathelminthes terdiri dari Camallanidae. Hasil penelitian menunjukkan bahwa tingkat prevalensi tertinggi terdapat pada Dactylogyrus sp., sedangkan untuk tingkat intensitas dan dominansi tertinggi terdapat pada Blastodiniidae.
BIOLOGI REPRODUKSI IKAN SEMBILANG (Plotosus canius) DI PERAIRAN PANTAI MAJAKERTA, INDRAMAYU, JAWA BARAT
Authors: Muharam Derry , Sulistiono  , Riani Etty
Published: February 2022

Ikan sembilang (Plotosus canius) merupakan salah satu jenis ikan konsumsi yang cukup banyak digemari masyarakat pantai. Penelitian ini bertujuan untuk menganalisis aspek reproduksi ikan tersebut. Kegiatan pengambilan contoh ikan dilakukan tiap bulan di perairan Majakerta, Indramayu, Jawa Barat, mulai dari Februari–April 2015. Total ikan contoh yang diamati sebanyak 98 ekor ikan terdiri atas 65 ekor ikan jantan dan 33 ekor ikan betina. Pengamatan dilakukan pada rasio kelamin, tingkat kematangan gonad, indeks kematangan gonad, ukuran pertama kali matang gonad, fekunditas, dan diameter telur. Berdasarkan hasil penelitian didapatkan, perbandingan ikan sembilang jantan dan betina yaitu 2:1. Ikan dengan tingkat kematangan gonad I–IV ditemukan pada setiap pengamatan. Ukuran pertama kali matang gonad ikan sembilang jantan dan betina adalah 281 mm dan 308,6 mm. Ikan ini memiliki fekunditas berkisar 564-864 butir, dan berdasarkan distribusi telur, ikan sembilang tergolong partial spawner.
EFEKTIVITAS RUMPON PORTABLE PADA PERIKANAN PANCING ULUR DI BANTEN
Authors: Yusfiandayani Roza , Simbolon Domu , Damayanti Weni
Published: February 2022

Pancing ulur merupakan alat tangkap yang biasa digunakan nelayan di perairan Teluk Banten. Akan tetapi, hasil tangkapan yang didapatkan nelayan hanya sedikit. Hal ini disebabkan karena nelayan pancing tidak memiliki informasi yang pasti tentang lokasi daerah penangkapan ikan yang potensial. Salah satu cara untuk meningkatkan efektivitas dan efisiensi operasi penangkapan ikan adalah tersedianya informasi daerah penangkapan ikan. Penggunaan teknologi rumpon portable diharapkan dapat menciptakan daerah penangkapan ikan sehingga operasi penangkapan ikan menjadi lebih efektif dan efisien. Penelitian ini bertujuan untuk membandingkan komposisi dan produktivitas hasil tangkapan pancing ulur dengan menggunakan rumpon portable dan tanpa rumpon, serta menentukan efektivitas rumpon portable. Metode penelitian yang digunakan adalah experimental fishing dengan banyak ulangan, yaitu 20 trip. Penelitian menunjukkan bahwa hasil tangkapan dominan pancing ulur yang menggunakan rumpon portable adalah kuniran, kurisi, kerapu hitam, selar. Ikan kuniran, kurisi, dan kerapu hitam didominasi oleh ukuran besar atau layak tangkap. Jumlah total hasil tangkapan pancing ulur sebanyak 931 ekor. Komposisi hasil tangkapan yang menggunakan rumpon portable yaitu 504 ekor dan tanpa menggunakan rumpon portable yaitu 427 ekor. Produktivitas pancing ulur di sekitar rumpon portable sebesar 1,29 kg/trip, sedangkan produktivitas pancing ulur tanpa rumpon 0,99 kg/trip. Penggunaan alat bantu rumpon portable saat operasi penangkapan lebih efektif dibandingkan dengan operasi penangkapan tanpa menggunakan alat bantu rumpon.
Acucapito hainanensis sp. nov., the first record of the family Acucapitidae Wiles, 1996 (Acari, Hydrachnidia) from China
Authors: Li Hai-Tao , Jin Dao-Chao , Guo Jian-Jun
Published: February 2022

We describe a new species Acucapito hainanensis Li and Guo sp. nov. from Hainan Province, P. R. China. In addition to being the first record of the family Acucapitidae Wiles, 1996 for Chinese water mite fauna, it is only the third species of this rare family in the world. Subtle structures are illustrated in detail with line drawings, light microscope images and scanning electron micrographs.
Validity of Performance Assessment Methods in Elite Paracanoeists
Authors: Starczewski Michal , Zmijewski Piotr , Klusiewicz Andrzej
Published: February 2022

The problem of valid and reliable research methods in paralympic sports seems of great significance, thus the aim of this study was to evaluate the validity of the Wingate test (WAnT) in assessment of anaerobic performance in elite paracanoeists competing in 200 m races. Seven paralympic athletes (32.6 ± 7.76 years), medal winners and finalists of the Paralympic Games, World and European Championships, as well as World Cups were examined. The evaluations were conducted during a competition which was held at the paralympic distance of 200 m, and included the WAnT for upper limbs and the anaerobic threshold test (ATT). Correlations of selected indices of mechanical work and power in the WAnT, as well as anaerobic threshold (AT) power, with the time recorded during the competition were used to determine indices which affected paracanoeing performance. The results indicated strong negative correlations with time achieved in the competition between peak power and total work in the WAnT, and AT power (R = -0.796 p = 0.032; R = -0.882 p = 0.009; R = -0.900 p < 0.001, respectively). The research confirmed the validity of the WAnT for the upper limbs to assess the performance level of paracanoeists. It may be concluded that the WAnT and ATT may be used for monitoring performance during the paralympic 200 m race.
The Flywheel Device Shaft Shape Determines Force and Velocity Profiles in the Half Squat Exercise
Authors: Muñoz-López Alejandro , Galiano Carlos , Núñez Francisco , Floría Pablo
Published: February 2022

Flywheel resistance training devices can be classified by their shaft shape. The objective of this study was to analyze whether using two flywheel resistance training devices shaft shapes can influence force and velocity production, regardless of the inertia used. Thirty-nine (n = 39) healthy active men participated in this study. They were randomized to perform 3 sets of 7 repetitions at maximal concentric voluntary execution, followed by a break in the last third of the eccentric phase in the half squat exercise. A progressive rotational inertial setting of 0.11, 0.22, and 0.33 kg·m2 was used. Force- and velocity-time profiles were captured using two force plates and a synchronized linear encoder. Statistical parametric mapping was used to compare biomechanical output between the flywheel devices. The level of significance was set at p < 0.05. Force application was significantly higher in the horizontal cylinder-shaped device for the three moments of inertia used in the eccentric phase (p < 0.001). In the concentric phase, force application was significantly higher in the horizontal cylinder-shaped device in 0.11 (p < 0.001) and 0.22 kg·m2 (p < 0.001). The resultant speed was higher in the vertical cone-shaped device in the concentric phase and the eccentric phase for the three moments of inertia (p < 0.001). In conclusion, the flywheel shaft type determines the mechanical output of the half squat exercise, regardless of the moment of inertia used. While a horizontal cylinder-shaped device is more suitable to achieve higher forces, especially in the eccentric phase, a vertical cone-shaped device can be used to achieve higher speeds during the execution of the exercise.
Agreement Between Kinovea Video Analysis and the Open Barbell System for Resistance Training Movement Outcomes
Authors: Carzoli Joseph , Sousa Colby , Helms Eric , Zourdos Michael
Published: February 2022

The purpose of this study was to examine the agreement between Kinovea video analysis software and the previously validated Open Barbell System (OBS) for assessing average concentric and eccentric velocity, eccentric duration, peak concentric velocity, height of peak concentric velocity, and concentric and eccentric range of motion. Sixteen resistance-trained males performed 11 repetitions at various intensities (between 60-100% of one-repetition maximum) on both the back squat and the bench press. For each repetition, all outcome measures were assessed with Kinovea and the OBS. Agreement between devices for each outcome measure was analyzed with paired t-tests, intraclass correlation coefficients with 95% confidence intervals, Bland-Altman plots, and folded empirical cumulative distribution plots (Mountain plots). All outcome variables were found to be statistically different (i.e. they did not agree) between the two devices (p < 0.001), except for average eccentric velocity (p = 0.315), as determined by the paired t-tests. Mountain plots had long tails for every outcome measure and Bland-Altman plots showed large limits of agreement for all outcome measures except concentric range of motion and the height of peak concentric velocity, demonstrating low agreement between devices. Based upon these findings and the previous validation of the OBS, these devices should not be used interchangeably.
A Systematic Review of Long‐Distance Triathlon Musculoskeletal Injuries
Authors: Rhind John-Henry , Dass Debashis , Barnett Andrew , Carmont Michael
Published: February 2022

The distribution of injuries affecting long-distance triathletes is yet to be fully understood. A systematic review was performed of the clinical literature to determine the epidemiology of musculoskeletal injuries affecting long-distance triathletes. Searched databases in Feb 2020 were PubMed, Medline, EMBASE, EMCARE, and CINHAL databases. Published observational research articles related to the incidence or prevalence of musculoskeletal injuries in long-distance triathletes (competing at “Ironman” full distance or greater), written in the English language and not restricted by age or gender or date were eligible. Of the 975 studies identified on the initial search, six studies met the inclusion criteria for analysis. The mean age (SD) of the long-distance triathletes in these studies was 35.1 (2.7) and the range was 21-68 years. Overuse injuries were most frequent with the incidence range of 37-91%, and acute injury incidence range was 24-27%. The knee and spine were the most frequent location of injury. Running and cycling were the most frequently affected disciplines. Elite athletes had a lower incidence of overuse injury (37%). The highest acute injury incidence (27%) was recorded in non-elite athletes. The quality of the studies was relatively poor with only one study satisfying >50% of the quality assessment tool questions and only two studies were prospective, the rest were retrospective cross-sectional studies. Overall, there is a lack of literature reporting on musculoskeletal injuries in long-distance triathletes. Overuse injuries, particularly in the knee, are the most frequently reported, running and cycling are the most frequent disciplines associated. Long-distance triathletes may have a lower incidence of both overuse and acute injuries.
Effect of Inter-Repetition Rest vs. Traditional Resistance Training on the Upper Body Strength Rate of Force Development and Triceps Brachii Muscle Architecture
Authors: Zaras Nikolaos , Stasinaki Angeliki-Nikoletta , Mpampoulis Thomas , Spiliopoulou Polyxeni , Hadjicharalambous Marios , Terzis Gerasimos
Published: February 2022

The purpose of the study was to examine the effect of seven-week inter-repetition rest vs. traditional resistance training on upper body maximum strength, the rate of force development and triceps brachii muscle architecture. Sixteen male participants were equally assigned into the inter-repetition rest and the traditional group. In both groups, training included the bench press exercise performed with 4 sets of 6 maximum repetitions, two training sessions per week. Twenty-second inter-repetition rest was employed for the inter-repetition rest group only. Measurements before and after the training period included maximum strength in the bench press, the isometric upper body rate of force development and peak force and triceps brachii muscle architecture. Maximum strength increased significantly in both groups (inter-repetition rest group: 21.5 ± 5.7% vs. traditional group: 13.5 ± 7.2%, p < 0.05), however, the maximum strength percentage increase was greater in the inter-repetition rest group compared to the traditional group (p = 0.027). Upper body isometric peak force increased only after inter-repetition rest training (10.7 ± 10.3%, p = 0.009). The rate of force development remained unchanged for both groups (p > 0.05), although percentage changes in time frames of 0-80 and 0-100 milliseconds were greater for the inter-repetition rest group compared to the traditional training group (p = 0.024 and p = 0.044, respectively). Triceps brachii thickness increased similarly for both groups (p < 0.05). These results suggest that inter-repetition rest may induce greater increases in maximum strength and the rate of force development compared to traditional training during the initial weeks of resistance training.
Are Teams whose Players are More Committed to the Team More Resilient? The Role of Intra-Group Conflict
Authors: López-Gajardo Miguel , García-Calvo Tomás , González-Ponce Inmaculada , Cantú-Berrueto Abril , Parma-Aragón Mládosich , Moncada-Jiménez José , Salicetti-Fonseca Alejandro , Tassi Juan , Leo Francisco
Published: February 2022

The study aimed to analyze the relationship between commitment to the team and team resilience factors (characteristics of resilience and vulnerability under pressure), and to examine whether the task and social intra-group conflict act as mediators between commitment to the team and team resilience factors. One hundred seventy (170) male soccer players (16-38 years; M = 18.35; SD = 4.72) of the national teams of Argentina, Costa Rica, and Mexico participated in the study. The path analytic model was used to test mediating pathways. First, the results revealed that commitment to the team was positively related to characteristics of resilience and negatively to vulnerability under pressure. Second, bootstrap mediation analysis showed that athletes’ perceptions of the task and social intra-group conflict mediated the association between their perception of commitment to the team and team resilience factors. Findings provide initial evidence for a link between commitment to the team and team resilience in national teams and also suggest that intra-group conflict can improve the association between commitment to the team and team resilience. Therefore, the main conclusion of this study is that practioners should promote players’ commitment to the team and avoid intra-group conflicts within teams to have a resilient team that copes with problems more easily.
Urban Imagery in the Old English Exodus and its Hermeneutics
Authors: Olesiejko Jacek
Published: February 2022

The present article offers a critical reading of the Old English Exodus, a poem that is an Old English versified adaptation of an episode from the biblical story of Exodus that narrates Israelites’ passage across the Red Sea and the destruction of Pharaoh’s army. The aim of this article is to analyse the poem’s urban and exilic imagery that strongly relies on the metaphorical representation of the Israelites as a city, as they are actually in exile and on the way to Canaan, and of the metaphorical representation of the walls of the Red Sea as the walls of a hall that is destroyed along with the Egyptian army. The argument of the present article is that in Exodus the poet uses the imagery of a hall and exile, derived from heroic and secular verse, as a hermeneutic key to read the biblical exodus typologically, tropologically, and anagogically. The metaphor of the key that opens the Scripture, which the poet uses in Exodus, encourages the reader to unveil the hidden meaning of the narrative. The poet inverts the conventional imagery of the hall and exile in the poem to emphasise narrative moments that require the reader to explore the letter of the poem for additional layers or signification.
Discovering the anxiety level of a basketball team using the SCAT questionnaire
Authors: Sopa Ioan Sabin , Pomohaci Marcel
Published: February 2022

Background

The level of anxiety can influence the performance obtained by the group and can also affect the communication and cohesion of the team. Recent studies proved that a high level of anxiety could lead to failure in sports performance and disturbance in group relationships.

Aim

The study aimed to analyze and reduce the level of anxiety in a basketball team U18 of CSM Medias, following the idea that reducing the personal anxiety level of each player can lead to better group cohesion and performance.

Methods

The research methods used in our experiment were the SCAT questionnaire and psychological therapy, that analyzed the level of anxiety in sports competition.

Results

The results of the investigation showed that after discovering the initial level of anxiety (22.42), using the SCAT questionnaire, and by performing several sessions of psychological therapy and group therapy, we managed to reduce the anxiety level at the final examination (20.83). Also, we achieved an improvement in group cohesion and communicational level.

Conclusions

Anxiety level can affect group performance and team results; our study highlighted the idea that the early discovery of malfunction in group collaboration and also in individual anxiety levels can lead to better team performance and also improve the cohesion and communication level.
Efficacy of pelvic floor muscle training in improving symptoms of urinary incontinence and health related quality of life among parous and nulliparous women
Authors: Szatmári Éva , Balla Béla József , Simon-Ugron Ágnes , Hock Márta
Published: February 2022

Objectives

To compare pelvic floor muscle strength, severity of urinary incontinence symptoms and health related quality of life between parous and nulliparous women; and to investigate the efficacy of pelvic floor muscle training in improving symptoms of urinary incontinence and health related quality of life in the previously mentioned two groups.

Materials and methods

Initially, 67 women were included in the study. Pelvic floor muscle strength and endurance were evaluated pre-treatment using the Pelvic floor exerciser. Participants were assessed before and after 10 weeks of pelvic floor muscle training by using The International Consultation of Incontinence Questionnaire – Short Form for symptoms severity, and The King’s Health Questionnaire for health related quality of life.

Results

The final sample included 32 participants: sixteen parous and sixteen nulliparous women between 18 and 50 years of age. Before the intervention, parous women (75%) were 2 times more likely to report urinary incontinence than nulliparous women (37.5%). They also had significantly lower pelvic floor muscle strength (p=.001), pelvic floor muscle endurance (p=.001), and more severe symptoms related to urinary incontinence (p=.009). Additionally, parous women had poorer disease specific quality of life in all domains. After the intervention, symptoms severity scores decreased significantly among both parous (p=.007) and nulliparous women (p=.038). Regarding quality of life, both groups had major improvements in all domains.

Conclusions

Our results suggest that urinary incontinence is more common among parous women. They experience more severe symptoms and have lower health related quality of life. Additionally, pelvic floor muscle training seems to be effective for improving symptoms of urinary incontinence and health related quality of life among both parous and nulliparous women.
Anxiety and athlete performance: a systematic narrative review of the mutual influence of these concepts
Authors: Datcu Remus Francisc , Brîndescu Sorin , Petracovschi Simona
Published: February 2022

Purpose

This systematic review was designed to assess the existence of a potential bidirectional relationship between competitive anxiety and sport performance among professional athletes. Psychotherapists believe that the relationship between these 2 parameters can be directly proportional and, moreover, can go both ways, as they have systematically observed in the general population.

Methods

For this purpose, a number of 45 descriptive studies were selected from the cybernetic literature to estimate the level of anxiety in competitive athletes, the variables that may influence this parameter and the level of performance achieved as a result. Without therapeutic intervention, anxiety parameters and its covariates were assessed to detect the influence on sport performance and predict the outcome of a competition based on these concepts.

Results

The systematic review of these studies revealed that competitive anxiety has a major and statistically significant influence on the competitive situation a an athlete, having an important action on their career in the short and long term.

Conclusions

This analysis has succeeded in demonstrating that a certain degree of anxiety, within the limits imposed by the game experience and through fine psychological mechanisms, can become an asset in terms of achieving the chosen goal in the athlete’s career.
A systematic review of integrated machine learning in posture recognition
Authors: Nicolae-Adrian Jurjiu , Claudiu Avram , Ana-Maria Vutan , Ciprian Glazer
Published: February 2022

Introduction

Posture detection is used in various situations such as medical care, surveillance, virtual environment, indoor monitoring, virtual reality for animations and entertainment. The concept of machine learning has experienced great progress in the last two decades, from a curiosity started in the laboratory to a widespread practical technology for commercial use.

Objective

The aim of this paper is to review the literature on the use of machine learning algorithms in the medical field for posture recognition.

Material and method

Articles were collected from the following databases: Google Scholar, Science Direct, PubMed and Research Gate. We included only articles that were written in English, those that were available for download in full text, published after 2010, the year in which the industrialization of the idea of artificial learning began. Articles that did not assess or recognize the posture deficiencies were excluded.

Results

A total of 55 articles were eligible for the study. Following the inclusion criteria, and after sorting, using the exclusion criteria, a number of 16 articles remained to be analyzed, presented and discussed.

Conclusions

After the analysis of the articles included in this study, it can be concluded that using machine learning we can obtain very good results with high accuracy for posture recognition.