bluuebunny/crossref_metadata_2025_split huggingface dataset:
Visual Outcomes, Contrast Sensitivity, and Satisfaction with Multifocal Intraocular Lens Blended Technique: Late Mid-term Results
Authors: Blanco Nicolas Alberto , Tello Alejandro , Galvic Virgilio , Mogollón Elizabeth Mendoza 
Published: July 2023

Purpose: To describe clinical visual outcomes, spectacle independence, and patient satisfaction after cataract surgery with blending implantation of ReSTOR (Alcon laboratories) multifocal intraocular lenses.
Material and Methods: A single-arm, non-randomized prospective study assessed patients undergoing cataract surgery with ReSTOR® +2.50 intraocular lens in the dominant eye and +3.00 add in the fellow eye between January 2015 to January 2020.
Results: In total, 47 patients (94 eyes) were enrolled, 28 women and 19 men. The average age at surgery time was 64 ±8 years, average postoperative follow-up was 45.4 ±7.0 months, with a minimum of 18.9 months. Postoperative binocular uncorrected distance visual acuity (UDVA) was on average 0.07 logMar (Snellen 20/24), uncorrected binocular intermediate visual acuity at 65 cm was 0.07 logMar (20/24), uncorrected binocular near visual acuity at 40 cm was 0.06 logMar (20/23). Contrast sensitivity under photopic and scotopic conditions, with and without glare, remained at the upper limit of normality. 98% of patients were quite satisfied or very satisfied. 87% did not require glasses for any activities, either at distant vision, nor at near vision.
Conclusions: Cataract surgery with ReSTOR® IOL blended vision showed medium-term satisfactory visual results, achieving spectacle independence and a high level of satisfaction.
Changes of Surgically Induced Corneal Astigmatism and Position of Artificial Intraocular Lens over Time
Authors: Popov Ivajlo , Juhas Ján , Kopálová Kamila , Krásnik Vladimír 
Published: July 2023

Aims: To analyze changes in surgically induced corneal astigmatism and artificial intraocular lens (IOL) stability over time following cataract surgery. To compare the interchangeability of measurements between an automatic keratorefractometer (AKRM) and a biometer.
Material and methods: In this prospective observational study, the above-mentioned parameters were collected from 25 eyes (25 subjects) on the first day, first week, first and third month after uncomplicated cataract surgery. We used IOL-induced astigmatism (difference between refractometry and keratometry) as an indirect indicator of IOL stability change. We used the Blant-Altman method to analyze consistency between devices.
Results: At the above time points, surgically induced astigmatism (SIA) decreased as follows: 0.65 D; 0.62 D; 0.60 D and 0.41 D (in the first day, week, month and third month respectively). Astigmatism induced by changes of the position of the IOL varied as follows: 0.88 D; 0.59 D; 0.44 D and 0.49 D. Changes in both parameters were statistically significant (p < 0.05). Neither the measurements of the astigmatism value nor the astigmatism angle showed a statistically significant difference between the devices (p > 0.05).
Conclusion: Both surgically induced astigmatism and astigmatism induced by IOL decreased over time, in which both changes were statistically significant. The decrease in SIA was most pronounced between the first and third month after surgery. For IOL-induced astigmatism, the greatest decrease was within the first month after surgery. The differences in measurement between the biometer and AKRM were statistically insignificant, but the clinical interchangeability between the given methods is questionable, especially with regard to measurement of the astigmatism angle.
Ocular Discomfort in Professional Polo-Water Players: A Practical Experience with Topical Hyaluronic Acid and Glycuronate Enoxolone
Authors: La Mantia Ignazio , Bannò Paolo , Scollo Paolo , Ciprandi Giorgio 
Published: July 2023

Aims: Professional polo-water athletes are exposed to chlorine in the swimming pool. Chlorine is an irritant agent, so polo-water athletes commonly experience irritative eye symptoms. Hyaluronic acid and glycuronate enoxolone exert anti-inflammatory and cytoprotective activity. Therefore, the present practical experience explored the efficacy and safety of eye drops containing both components.
Material and Methods: The current study included 59 professional polo-water athletes. The ocular surface disease index (OSDI) and dry eye-related quality of life (QoL) score (DEQS) questionnaires were used to assess the efficacy. Subjects took the eye drops for one month. The study consisted of a baseline visit (T0) and an end-treatment one (T1).
Results: Athletes experienced a significant improvement in symptoms and QoL as assessed by OSDI and DEQS scores (p < 0.001 for both).
Conclusion: The present study showed that professional polo-water athletes frequently experience ocular discomfort associated with swimming pool attendance. Eye drops with hyaluronic acid and glycuronate enoxolone can significantly relieve eye symptoms and improve the quality of life in these athletes.
Prof. Dr Carl Ferdinand Ritter von Arlt (1812–1887): His Life and Work During his Ophthalmological Career in Prague
Authors: Ivanišević Milan 
Published: July 2023

The aim of this paper is to provide an overview of the life and work in Prague of the famous ophthalmologist Carl Ferdinand Ritter von Arlt (1812‒1887).
The paper presents data on his stay in Prague while studying Medicine and working as a private physician and ophthalmologist. Professor von Arlt was Head of the Chair of Ophthalmology at Charles University. He was Director of the Eye Clinic at Prague General Hospital from 1849 to 1856. A detailed description is given of his residences and their appearance today. Very little has been written about this aspect, so the paper will be a supplement to his impressive biography. A brief, chronological, systematic and concise biography is also provided, including details of his family and his contributions to Ophthalmology.
During his 25-year stay in Prague (1831–1856), he commuted between the city centre and the General Hospital where he worked. He changed the location of his residence five times. It is important to note and not to forget where one of the greatest ophthalmologists of the 19th century worked and resided in Prague.
Rheohemapheresis in the Treatment of Dry Form of AMD. A Case Report
Authors: Stěpanov Alexandr , Langrová Hana , Studnička Jan , Burova Marya 
Published: July 2023

Aim: We present a case report of a patient with dry form of age-related macular degeneration (AMD) in whom we monitored the effect of rheohemapheresis (RhF) treatment over 6 years.
Methods: A 67-year-old man was examined in April 2014 at the Department of Ophthalmology at the University Hospital in Hradec Králové for metamorphopsia and decreased visual acuity of the left eye. The patient received general treatment for hypercholesterolemia with Lipfix 10 mg once a day (atorvastatin 10 mg). The cholesterol level in the blood was 3.41 mmol/l, the lipid profile was normal. The patient’s previous ocular medical history was unremarkable.
The patient reported ocular complaints over the course of the last year, the main symptom of which was image distortion on the Amsler grid on the left eye. Baseline best corrected visual acuity of the left eye was 6/10. Visual acuity in the right eye was 6/6. In both eyes, the findings on the anterior segment corresponded to the patient’s age, with the exception of incipient cortical cataract. On the fundus of both eyes, the border of the optic nerve was demarcated, in the macula of the left eye there were a number of soft confluent drusen, in the central periphery there were no pathological changes. On the fundus of the right eye the finding was similar, but to a lesser degree. Optical coherence tomography on the macula of the left eye showed drusoid ablation of the retinal pigment epithelium (RPE), with accumulation of hyperreflectivities below the RPE. Pattern-reversal electroretinography (pERG): showed a slightly prolonged retention of the activity of the central region of the retina (p50 wave) and ganglion cells (N95 wave). Multifocal electroretinography (mfERG) in the central 30° of the retina was within normal limits. Electroretinography (ERG) demonstrated physiological photopic and scotopic rod activity. The patient was treated with 8 RhF procedures, two per week, with a 2-week interval, and the pulse was repeated 4 times.
Results: We noted a gradual resorption of soft drusen in the patient, with attachment to the RPE line according to OCT examination at the following six-monthly check-ups over the next 6 years. Visual acuity of both eyes was maintained at the baseline values at the last check-up in April 2020, the area of soft drusen was significantly reduced. The function of the rod, cone system and the central region of the retina mfERG fluctuated only to an insignificant degree during the entire follow-up period, with a tendency towards a slight increase in activity after RhF treatment.
Conclusion: We noted an improvement of the anatomical and functional findings in a patient with dry form of AMD during a 6-year follow-up period after RhF treatment. The visual acuity of the affected eye remained at the baseline values.
High signal intensity of the intraaneurysmal sac on T1 CUBE imaging as a predictor of aneurysm stability after coil embolization
Authors: Hashimoto Yukishige , Matsushige Toshinori , Kawano Reo , Hara Takeshi , Kobayashi Shohei , Kaneko Mayumi , Ono Chiaki , Horie Nobutaka 
Published: July 2023

OBJECTIVE
Histopathological studies of aneurysms after coil embolization showed that thrombus formation during the first month after endovascular treatment (EVT) played an important role in the healing process. The authors hypothesized that dedicated T1-weighted imaging may be used to predict stable aneurysms by visualizing the thrombus status within coil-treated aneurysms. Therefore, this study investigated the relationship between the signal intensity (SI) of the intraaneurysmal sac after coil embolization and aneurysm stability.

METHODS
The study population included 82 patients with 86 aneurysms who underwent T1-weighted 3D black-blood fast spin-echo (T1 CUBE) imaging within 1 month after coil embolization between 2019 and 2022. The relative SI of a coil-treated aneurysm (RSIcoiled) was calculated as follows: the mean SI of the intraaneurysmal sac/the mean SI of the genu of the corpus callosum. Aneurysms with enlarged remnants on MR angiography (MRA) within 6 months after EVT were defined as recurrence, while a decrease of intraaneurysmal flow on MRA was defined as improved embolization status. Stable aneurysms were defined as improvement or no change in embolization status 6 months after coil embolization. The volume embolization ratio (VER) was calculated as the ratio of the packed coil volume to the aneurysm volume. Differences between stable and recurrent aneurysms were examined. All aneurysms were divided into high and low RSIcoiled groups based on the cutoff value of RSIcoiled, and differences between the two groups were also evaluated.

RESULTS
Recurrence was confirmed for 26 of 86 aneurysms. A univariable analysis showed that small aneurysms, high VER, and high RSIcoiled were associated with aneurysm stability. In the receiver operating characteristic curve analysis, the optimal cutoff value for RSIcoiled to differentiate stable from recurrent aneurysms was 0.54. The cutoff value for RSIcoiled was selected as 0.50 (sensitivity 0.77, specificity 0.70) because it was half the value of the SI of the corpus callosum and close to the optimal cutoff value. In a multivariable analysis, RSIcoiled > 0.50 (OR 8.1, 95% CI 2.5–27) remained a significant factor for aneurysm stability. The high RSIcoiled group showed a higher rate of an improved embolization status (26% vs 6.1%, p = 0.022) and stable aneurysms (85% vs 15%, p = 0.0002).

CONCLUSIONS
RSIcoiled was associated with postcoiling aneurysm stability. High RSIcoiled might imply intraaneurysmal thrombus formation associated with the healing process of coil-treated aneurysms.
Proteksi Motor Induksi Satu Fasa Terhadap Kenaikan Suhu Pada Pengering Maggot Berbasis Panel Surya
Authors: Asri Indah Lestari  , Sofiah Sofiah , Yogie Ragil Pamungkas  
Published: July 2023

Electric motors are a very vital need in an industry, household and other needs. Electric motors that are often used in an industry are types of induction motors, where the induction machine is an electric motor that is very easy in its maintenance system so that this motor has the highest rating in its use system. In this study, using a single-phase induction motor as a maggot dryer is useful for making the maggot storage period longer and of high selling value. This study aims to protect the single-phase induction motor in the maggot drying system against temperature increase due to prolonged grinding using the DS18B20 sensor. So that the single-phase induction motor is able to work when the motor is unstable at the time of overcurrent. With the installation of the DS18B20 sensor, the single-phase induction motor will stop automatically when the given temperature setting has exceeded the limit set on the sonoff. With the protection system of this single-phase induction motor, it can maximize the performance of the electric motor in the maggot drying process and provide convenience in remote motor control and time setting on and off using the Internet of Things (IoT).
PENGARUH POSISI TRACK ROLLER DAN UNIT MACHINE TERHADAP LAJU TINGKAT KEAUSAN TRACK ROLLER PADA BULLDOZER KOMATSU D375A-5
Authors: Akbar Syaeful , Baharuddin Randis , Anhar Wahyu 
Published: July 2023

Performa atau unjuk kerja bulldozer sangat dipengaruhi oleh kondisi komponen undercarriage. Pada saat bulldozer beroperasi, track roller menekan dan menggelinding di atas track link sehingga terjadi gesekan antara track link dan track roller akibatnya kedua permukaan komponen tersebut mengalami keusan. Gesekan dan keausan merupakan kerugian dalam bentuk kehilangan energi dan material yang membutuhkan biaya [4]. Oleh karenanya penelitian terhadap laju tingkat keausan komponen undercarriage menjadi penting karena lebih dari 60% total biaya perawatan unit bulldozer adalah Investasi biaya perawatan undercarriage [5]. Laju tingkat keausan track roller dipengaruhi oleh beban yang bekerja pada masing-masing track roller dan material ke tiga berupa tanah atau batuan yang masuk diantara kedua komponen tersebut. Bulldozer Komatsu D375A-5 memiliki 8 buah track roller yang konstruksi dan posisinya berbeda. Ada yang relative terbuka sehingga material tanah dapat mudah masuk, dan juga mudah keluar. Ada yang relative terlindung, sehingga tanah lebih sulit masuk, namun jika sudah masuk akan lebih sulit keluar. Penelitian ini dimaksudkan untuk menginvestigasi apakah posisi track roller dan unit machine mempengaruhi laju tingkat keusan track roller.Objek yang digunakan dalam penelitian ini adalah Track Roller dari 3 unit Bulldozer Komatsu D375A-5 yang dioperasikan di area yang sama yaitu soil disposal pada area tambang Batubara site Batu Kajang. Dengan demikian kondisi tanah di area operasional machine diasumsikan sama. Sampel data yang digunakan berupa data sekunder dari hasil pengukuran undercarriage yang masing-masing machine dilakukan pengukuran sebanyak 8 (delapan) kali pada setiap 400 jam operasi selanjutnya dihitung laju tingkat keausan track roller dalam mm3/jam. Dari hasil uji ANOVA dua arah menunjukan bahwa nilai F pada variable baris (posisi track roller) lebih kecil dari F kritis artinya tidak ada pengaruh posisi track roller terhadap laju tingkat keausan track roller. Sedangkan berdasarkan variable kolom (unit machine) menunjukan bahwa nilai F lebih besar dari F kritis artinya Unit machine berngaruh terhadap laju tingkat keausan track roller. Sedangkan nilai F interaksi menunjukan lebih kecil dari nilai F kritis artinya tidak ada interaksi antara posisi/letak track roller dengan unit machine.Karena posisi/letak track roller tidak mempengaruhi laju tingkat keausan track roller, maka strategi penggantian track roller tidak dianjurkan secara parsial, tetapi harus diganti secara bersamaan. Sedangkan karena unit machine berpengaruh terhadap laju tingkat keausan track roller, maka perlu dilakukan penelitian lebih lanjut untuk menginvestigasi pengaruh kondisi/performa machine, perilaku operator, dan kondisi tanah terhadap laju tingkat keausan track roller.
Analisa Performa MPPT Algoritma Flower Pollination Alghorithm dan Perthurb and Obserbve Menggunakan Zeta Converter
Authors: Santoso Guntara Sukma Ragil 
Published: July 2023

Indonesia merupakan negara tropis yang memiliki intensitas cahaya matahari yang cukup tinggi dibanding dari negara lain. Sehingga, Indonesia memiliki potensi yang tinggi dalam pemanfaatan energi alternatif berupa energi surya. Energi surya merupakan energi yang berkelangsungan yang dapat kita manfaatkan terus menerus. Sehingga pemanfaatan energi surya cukup banyak dan salah satunya pemanfaatan untuk kelistrikan. Daya yang dihasilkan dari panel surya sangat dipengaruhi dari kondisi lingkungan dan cuaca. Sehingga untuk memaksimalkan daya keluaran pada panel surya maka digunakanlah MPPT (Maximum Power Point Tracking). Banyak sekali metode – metode yang digunakan untuk MPPT dan salah satunya adalah MPPT dengan metode Flower Pollination Alghorithm. Metode MPPT yang digunakan akan diterapkan pada Zeta Converter untuk mengatur daya yang dikeluarkan dari panel surya. Algortima dari metode MPPT yang digunakan dibangun pada C-Code pada simulasi software PSIM. Dari hasil sistem yang dibangun menggunakan kedua metode MPPT tersebut, akurasi dan waktu tracking yang dihasilkan oleh metode MPPT FPA sebesar 99,97% dan 0,186 detik. Sedangkan metode MPPT P&O memiliki akurasi dan waktu tracking sebesar 99,88% dan 0,745 detik. Dari bentuk gelombang kedua metode tersebut, MPPT dengan metode P&O terdapat osilasi daya pada titik maksimum, sedangkan MPPT dengan metode FPA tidak terjadi osilasi. Dari hasil tersebut dapat diketahui keunggulan MPPT dengan metode Flower Pollination Alghorithm memiliki respon waktu tracking yang cepat, akurasi yang tinggi, dan tidak menghasilkan osilasi daya pada titik maksimum dibandingkan MPPT dengan metode konvensional seperti P&O.Kata kunci : Energi Alternatif, Panel Surya, FPA, P&O, MPPT
DESAIN DAN SIMULASI CUK CONVERTER DENGAN PI-FUZZY CONTROLLER UNTUK PENGISIAN BATERAI
Authors: Tantowi Zaim Nur 
Published: July 2023

Berkembang pesatnya pemanfaatan energi terbarukan salah satunya energi untuk pemanfaatan sinar matahari dengan menggunakan panel surya, dimana panel surya berfungsi untuk mengubah energi matahari ke energi listrik. Sinar matahari dapat diperoleh secara gratis serta ramah lingkungan. Terdapat banyak kelebihan dari pemanfaatan energi matahari melalui panel surya namun terdapat kekurangan menggunakan panel surya salah satunya adalah panel surya menghasilkan listrik yang berfluktuasi tergantung dengan iradiasi sehingga menghasilkan tegangan keluaran yang tidak konstan. Untuk proses pengisian baterai bergantung dengan iradiasi sehingga proses pengisian baterai tidak dapat optimal. Oleh karena itu untuk mengatasi permasalahan tersebut maka dirancangkan sebuah sistem yaitu menggunakan CUK Converter dengan PI-Fuzzy Controller yang digunakan untuk mengatur tegangan output yang konstan untuk proses pengisian baterai. Hasil dari simulasi menunjukkan bahwa PI-Fuzzy Controller dapat mengontrol tegangan keluaran Cuk Converter yang konstan, dengan cara mengubah-ubah iradiasi mulai dari 1000W/m2 sampai 500W/mdihasilkan error tegangan keluaran sebesar 0.30%. Hal ini menunjukkan bahwa kontrol PI-Fuzzy dapat mencapai steady state cepat dan error tegangan keluaran yang kecil
Pengaruh Tingkat Kecepatan Putaran Spindel Bubut terhadap Pahat dan Permukaan Pada Baja ST41
Authors: Manta Faisal - , Dwi Haryono Hadhimas , Fikri Wirayudha Reihanda 
Published: July 2023

Dalam dunia permesinan tahapan manufaktur yaitu salah satunya pembubutan adalah suatu tindakan dalam menciptakan suatu produk. Pada aktivitas pembubutan sering kali pengelolahan dilakukan pada bahan baku logam, khususnya pada baja ST 41. Pada pengolahan baja ST 41 tersebut dapat dimanfaatkan pada pembuatan poros untuk kendaraan serta untuk bahan konstruksi. Pada proses pembubutan kekasaran dijadikan sebagai kualitas produk dan pahat sebagai salah satu faktor penghasil dari suatu kualitas produk tersebut. Selain pada pahat, kecepatan spindel juga berperan untuk menghasilkan produk yang berkualitas. Pada dasarnya ada sebab dan akibat yang ditimbulkan dari kecepatan spindel yaitu pada penelitian ini dengan metode eksperimental yang digunakan pada penelitian ini menitikberatkan mengenai kerusakan pahat atau keausan pahat dan hasil dari kualitas produk itu sendiri yaitu nilai kekasaran permukaan. Pada penelitian ini, bertujuan untuk mengetahui pengaruh tingkat kecepatan putaran spindel terhadap kerusakan pahat dan kekasaran pada permukaan Baja ST 41. Dari penelitian yang telah dilakukan menghasilkan kesimpulan bahwa tingginya kecepatan putaran spindel dapat memperbesar kerusakan pada pahat dan pada nilai kekasaran berbanding terbalik, yaitu dengan tingginya kecepatan putar menyebabkan kualitas produk yang baik, karena semakin rendah nilai kekasaran menandakan bahwa kualitas dari produk hasil bubut tersebut baik.
Analisis Tahanan dan Biaya Material Kapal Perikanan Fiberglass Pada Perairan Kabupaten Buton Selatan
Authors: Mubarak Azhar Aras 
Published: July 2023

Pembuatan kapal nelayan berbahan fiberglass saat ini sedang mengalami perkembangan yang besar. Beberapa faktor yang menjadi keunggulannya adalah karena biaya yang dikeluarkan lebih murah, bahan material yang digunakan kuat dan awet, serta material yang digunakan dapat dengan mudah dijangkau. Saat ini, beberapa pengrajin kapal kayu lebih memilih untuk membuat kapal berbahan fiberglass sehingga produksi tetap bisa dilakukan. Penelitian ini bertujuan untuk menentukan desain dan kapasitas kapal yang cocok digunakan para kelompok nelayan pada skala kecil khususnya didaerah Kabupaten Buton Selatan dengan mempertimbangkan biaya pembuatan kapal dan penggunaan material fiberglass yang digunakan untuk membuat kapal nelayan yang diinginkan. Tersedianya data ukuran geometri kapal yang berasal dari rancangan desain kapal nelayan berdasarkan persepsi masyarakat setempat, kebutuhan masyarakat sertagambaran dan perhitungan tahanan kapal desain. Selain itu penelitian ini digunakan untuk mengetahui data kebutuhan material yang digunakan dalam membuat kapal rancangan tersebut ketika kedepannya akan diproduksi. Dari hasil penelitian diperoleh bahwa nilai tahanan desain kapal dengan menggunakan Aplikasi Maxsurf khususnya Metode Holtrop didapatkan sebesar 1,13 kN, metode Van Oortmerse 2,14 kN, dan metode Fung sebesar 1,79 kN masing-masing pada kecepatan 10 Knot. Ukuran utama kapal yang direncanakan yakni Panjang = 9,1 m, Lebar = 1,2 m, Tinggi 0,9 m dan sarat = 0,4 m dengan biaya pembuatan sebesar Rp 24.566.500,00.
Variasi Campuran Limbah Sayur Kol dan Feses Sapi Untuk Meningkatkan Produktifitas Biogas: Studi Eksperimental
Authors: Yani Ahmad 
Published: July 2023

Biogas is a type of gaseous fuel obtained through the anaerobic fermentation process of organic matter into methane gas, one of the ingredients for making biogas is cow dung vegetable waste. The purpose of this study was to determine the variation of the mixture of vegetable col waste with cow feces on the efficiency and calorific value of biogas. The research method used is an experimental method on a scale of 20 liters of biogas digester volume. The results of the five variations of mixed vegetable col waste with cow feces showed that the highest biogas efficiency occurred in a mixture of 70% vegetable col waste with 30% cow feces with a value of 0.037%. While the lowest efficiency occurred in a mixture of 0% col vegetable waste with 100% cow feces with a value of 0.029%. The highest calorific value of biogas occurs in a mixture of 70% vegetable col waste with 30% cow feces with a value of 35,758.51 cal/ltr. While the lowest calorific value of biogas occurs in a mixture of 0% vegetable col waste with 100% cow feces with a value of 19,887.07 cal/ltr. Keywords: cow feces, vegetable waste col, efficiency, calorific value, biogas.