bluuebunny/crossref_metadata_2025_split huggingface dataset:
Tekstur dan Uji Tarik Ti~4% berat Al yang Dicanai Searah pada Suhu 1100 C
Authors: Supriyanto Adolf Asih , Syafrizal Syafrizal , Tauvana Ade Irvan 
Published: August 2021

Saat ini masih jarang ditemukan penelitian menggunakan paduan Al-Ti dengan komposisi berat Al yang sangat kecil. Tidak banyak orang melakukan penelitian tekstur tentang bahan ini. Proses canai dan anil dapat mempengaruhi tekstur dan sifat mekanik bahan. Pada penelitian ini telah dilakukan proses canai dan anil terhadap bahan Ti-4%beratAl. Tujuan dari penelitan ini adalah untuk mengetahui anisotropi uji tarik bahan tersebut akibat proses canai dan anil. Bahan yang digunakan adalah 3 batang Ti-4%beratAl yang dicanai pada suhu 1100 <sup>o</sup>C dengan reduksi tebal 96%. Kemudian 1 batang Ti-4%beratAl dianil pada suhu 900 <sup>o</sup>C selama 3,5 jam dan 2 batang Ti-4%beratAl dianil pada suhu 850 <sup>o</sup>C masing-masing selama 1 dan 4 jam. Difraksi sinar-x dengan metode refleksi digunakan untuk menentukan tekstur yang dinyatakan dengan gambar kutub (11-20). Uji Tarik dilakukan terhadap bahan yang dianil pada suhu 850 <sup>o</sup>C selama 1 jam. Hasil menunjukan bahwa Ti-4%beratAl yang dianil pada 850oC selama 1 jam memiliki tekstur dengan bidang kutub (11-20) terpecah di daerah sekitar ±30<sup>o</sup> dari arah arah normal (AN) ke arah canai (AC). Hasil uji tarik menunjukkan bahwa nilai UTS untuk arah AC, 45 <sup>o</sup>C dan AL berturut-turut adalah 651MPa, 571MPa dan 632MPa.
Числове та експериментальне дослідження наповнення резервуару компонентом газової суміші
Authors: Шипуль Ольга Володимирівна , Заклінський Сергій Олександрович , Комбаров Володимир Вікторович , Павленко Олексій Анатолійович , Гарін Вадим Олегович 
Published: August 2021

The subject of the research is mathematical models of a gas-dynamic non-stationary process of filling a vessel with a component of a gas mixture. The aim of the study is the scientific and experimental substantiation of the choice of a model of filling a vessel with a component of a gas mixture with a given accuracy. The objectives of the study are to conduct full-scale experiments on filling the vessel with gas for further verification of the gas mixture generation control system, as well as in the development of adequate mathematical models of gas-dynamic flow, the analysis of simulation results, and the use of verified results in the system of automated generation of a gas mixture of a given accuracy by assessing the mass of its components depending on the filling parameters. The tasks are solved by studying the results of numerical modeling of the process and full-scale experiments. The following results are obtained. A series of full-scale experiments on filling a vessel with high-frequency monitoring of the pressure and temperature of the gas being filled was carried out. Significant factors were analyzed. The use of SAS SST turbulence models was substantiated. Models of the gas-dynamic unsteady process of filling the vessel with a component of the gas mixture for various values of the mass flow rate had been built. All the simulations were carried out using the ANSYS CFX software package. The influence of considering a heat exchange with the vessel walls on the studied parameters of the mixture is determined, namely: pressure, gas temperature averaged over the volume, gas temperature in a control point, mass of the component of a gas mixture. It was found that the deviation of the calculated data when using a model with an adiabatic condition on the wall compared to a model with a constant temperature regime is: for pressure – no more than 5 %, for averaged temperature – 6 %, for the temperature at the monitor point – 9 %, for mass – 1.5 %. The discrepancy between the simulation results and the full-scale experiment does not exceed 12 % in pressure and temperature at the monitor point, as well as 4 % in the mass of the component. By the experimentally determined accuracy parameter of the gas mixture (the mass of the mixture component in particular), the numerical models had been corrected to provide the mass value error of no more than 0.5 %.
Пілотна оцінка ставлення експертів до значущості характерних рис інноваційної привабливості об’єктів інтелектуальної власності
Authors: Яроцький Станіслав Володимирови 
Published: August 2021

Modern technology transfer is associated, inter alia, with the selection and implementation into production of the objects of intellectual property. At the same time, proactive assessment of the investors’ or experts’ attitude to the characteristics and indicators of these objects determines the appropriate "order" and promotes more effective interaction between the producers and the users of intellectual property. The experts’ preference patterns as the ordered series of many characteristics of attractiveness for innovation of objects of intellectual property are one of the indicators of human influence on decision-making about the degree of acceptability of a particular object and should be used to implement the method of successive concessions based on the pattern recognition methodology, "glob pattern/masks" of this acceptability. The research involved m = 90 highly qualified specialists who are constantly involved in UkrISTEI to provide various expert examinations. A more up-to-date list of n=18 characteristics of attractiveness for innovation of objects of intellectual property has been formed, which allows to study these objects comprehensively and to the fullest extent. The pairwise comparison and normative method of establishing part of the total value (significance, acceptability) of these characteristics were used by the experts, who took part in the research. They built individual systems of preferences, which were then aggregated into a group preference pattern using a group decision-making strategy such as summarizing and grade averaging. Verification of consistency of the group preference pattern revealed that the obtained empirical value of the Kendall's coefficient of concordance is statistically valid at an unusually high level of significance of a= 1% as for human factor studies. However, it does not satisfy the criterion for the minimum acceptable value: Wemp.=0,4772<Wmin=0,7. The ways of further research related to the application of multi-step technology of detection and elimination of marginal thoughts while eliminating the statistical error of the "survivor", as well as improving the group preference pattern where the classical Savage’s criterion in decision-making and the Kemeni median are applied.
ANALISA DISPERSI PM2,5 MENGGUNAKAN MODEL GAUSS POINT SOURCE DIKAWASAN INDUSTRI DAN DESAIN VENTURI SCRUBBER BESERTA IPAL UNTUK EFFLUENT VENTURI (Studi Kasus : Industri Peleburan Aluminium PT.X Kecamatan Kesamben, Jombang)
Authors: Maharani Ida Dwi , Razif Mohammad 
Published: August 2021

Kegiatan Industri Peleburan Aluminium PT.X mengakibatkan kualitas udara di sekitar industri menurun hal tersebut ditandai oleh beberapa keluhan dari masyarakat, PM2,5 merupakan salah satu partikulat yang ditimbulkan dari proses peleburan aluminium yang mana sangat berpengaruh negatif terhadap kesehatan manusia. Tujuan dari penelitian adalah menganalisis konsentrasi PM2,5 di kawasan penduduk menggunakan model gauss point source serta mendesain alat pengendali pencemar udara venturi scrubber untuk dapur peleburan aluminium beserta instalasi pengolahan air limbah. Hasil perhitungan menunjukkan bahwa konsentrasi PM2,5 di kawasan industri PT.X titik 1 (50 m dari lokasi industri) yaitu 2,7 x 10-5/m3, titik 2 (100 m dari lokasi industri) yaitu 6,7 x 10-6/m3, titik 3 (200 m dari lokasi industri) yaitu 1,6 x 10-6/m3 dari ketiga titik tersebut masih memenuhi baku mutu udara ambient Peraturan Pemerintah Republik Indonesia No. 41 Tahun 1999. Hasil perhitungan desain venturi scrubber diperoleh dimensi venturi diameter throat (lebar) 0,55 m, panjang throat 1,65 m, dan panjang bagian diverging 2,2 m prosentase removal partikulat PM2,5 sebesar 95% dan hasil perhitungan desain IPAL diperoleh untuk bangunan koagulasi dengan dimensi Panjang 0,86 m, lebar 0,86 m dan tinggi 1,2 m, bangunan Flokulasi diperoleh panjang 2,1 m , lebar 4,2 m dan tinggi 2 m, bangunan Sedimentasi dengan diameter 5,6 m dan tinggi 1,57 m. Rencana Anggara Biaya dari perhitungan desain didapatkan untuk desain Venturi Scrubber dan IPAL yaitu sebesar Rp. 83.647.421.
PENILAIAN DAUR HIDUP PRODUKSI GAS BUMI DAN KONDENSAT DI LAPANGAN SOUTH PROCESSING UNIT (SPU) – SWAMP AREA
Authors: Sumitro Doni Agus , Kusumawanto Arif , Hidayat Muslikhin 
Published: August 2021

South Processing Unit (SPU) adalah lapangan gas yang memproduksi kondensat dan gas bumi. Proses produksi kondensat dan gas bumi dapat mengakibatkan dampak terhadap lingkungan. Untuk mengukur dampak lingkungan yang di akibatkan oleh proses produksi kondensat dan gas bumi, dapat digunakan metode Life Cycle Assessment (LCA). Metode ini dapat digunakan untuk mengevaluasi dan menganalisis dampak suatu produk terhadap lingkungan. Penelitian ini bertujuan untuk mengetahui unit proses produksi yang berdampak besar terhadap global warming, dan human toxicity serta memberikan rekomedasi perbaikan untuk mengurangi dampak lingkungan. Penelitian ini menggunakan metode LCA dan dihitung memakai software Simapro versi Developer 9.0. Hasil penelitian diketahui bahwa dampak lingkungan terjadi pada proses produksi gas dan kondensat di lapangan South Processing Unit (SPU) terdapat pada unit proses LP Compressors, Turbo Electric Generator, SCP Flare, SMP Flare, dan Sodium Hydroxide Injection. LP Compressors memberikan dampak terbesar terhadap Global warming dan Human toxicity karena memberikan dampak sebesar 2.855,236 kg CO2 dan 8,8839 kg 1,4-DB eq. Rekomendasi yang diberikan untuk mengurangi dampak lingkungan adalah penggunaan biomassa sebagai bahan bakar alternative, adsorpsi CO2 dengan adsorban zeolite, dan penanaman tanaman penyerap CO2.
Kata kunci: LCA, South Processing Unit (SPU), SimaPro
FITOREMEDIASI LIMBAH LAUNDRY MENGGUNAKAN TANAMAN MENSIANG (Actinoscirpus grossus) DAN LEMBANG (Thypa Angustifolia L.)
Authors: Puspita Indria Setya , Mirwan Mohammad 
Published: August 2021

Limbah laundry adalah salah satu jenis limbah yang pada umumnya dibuang secara langsung ke lingkungan (badan air) tanpa dilakukan pengolahan terlebih dahulu. Limbah laundry memiliki kandungan pencemar diantaranya Surfaktan, Fosfat, BOD dan TSS. Fitoremediasi adalah metode yang digunakan dalam mengolah limbah laundry dan diujikan dalam penelitian ini. Tanaman yang digunakan dalam metode ini adalah Mensiang dan Lembang. Selain itu, penelitian ini menggunakan sistem batch dengan volume limbah 10 liter dan variasi kerapatan tanaman 3 dan 5 tanaman per reaktor. Waktu tinggal air limbah pada reaktor adalah 3, 6 dan 9 hari. Hasil yang didapatkan dari penelitian ini yaitu persen penyisihan Surfaktan dan BOD sebesar 97,26% dan 84,94% pada reaktor Lembang. Persen penyisihan Fosfat dan TSS sebesar 98,38% dan 93,81% pada reaktor Mensiang. Waktu tinggal optimal adalah 9 hari.
PERBANDINGAN KADAR LEUKOSIT DARAH PADA PASIEN APENDISITIS AKUT DAN APENDISITIS PERFORASI DI RSUD MEURAXA BANDA ACEH
Authors: Sophia Aya , Mustaqim Muhammad Hendro , Rizal Fakhrul 
Published: August 2021

Apendisitis didefinisikan sebagai peradangan pada apendiks vermiformis (kantong cacing) yang merupakan darurat bedah paling umum pada anak-anak dan dewasa muda dengan nyeri perut. Apendisitis diduga disebabkan oleh obstruksi lumen apendiks oleh faecalith, stasis faecal, hiperplasia limfoid atau caecal neoplasma dan berbagai infeksi oleh patogen. Penelitian ini bertujuan untuk mengetahui perbandingan kadar leukosit darah pada apendisitis akut dan apendisitis perforasi di RSUD Meuraxa Banda Aceh. Jenis penelitian ini adalah penelitian survei studi retrospektif dengan desain penelitian cross sectional. Pengambilan data dari catatan rekam medis. Jumlah sampel yang digunakan 89 orang yang terdiri dari 56 orang pasien apendisitis akut dan 33 orang pasien apendisitis perforasi. Analisis data menggunakan Uji T-test sampel tidak berpasangan (Independent sample t-test). Nilai rerata leukosit darah pada pasien apendisitis akut sebesar 10.741,8 sel/mm3 dan apendisitis perforasisebesar 20.023,6 sel/mm3. Hasil penelitian ini menunjukan nilai p-value pasien apendisitis akut dan apendesitis perforasi masing-masing adalah P= 0,239 dan P=0,749. Uji Independent sample t test diperoleh statistik uji t sebesar -11,963 dengan P<0,001. Terdapat perbedaan antara kadar leukosit darah pada pasien apendisitis akut dan apendisitis perforasi.
Prevalence of Gestational Diabetes Mellitus in the Middle East and North Africa, 2000–2019: A Systematic Review, Meta-Analysis, and Meta-Regression
Authors: Al-Rifai Rami H. , Abdo Noor Motea , Paulo Marília Silva , Saha Sumanta , Ahmed Luai A. 
Published: August 2021

Women in the Middle East and North Africa (MENA) region are burdened with several risk factors related to gestational diabetes mellitus (GDM) including overweight and high parity. We systematically reviewed the literature and quantified the weighted prevalence of GDM in MENA at the regional, subregional, and national levels. Studies published from 2000 to 2019 reporting the prevalence of GDM in the MENA region were retrieved and were assessed for their eligibility. Overall and subgroup pooled prevalence of GDM was quantified by random-effects meta-analysis. Sources of heterogeneity were investigated by meta-regression. The risk of bias (RoB) was assessed by the National Heart, Lung, and Blood Institute’s tool. One hundred and two research articles with 279,202 tested pregnant women for GDM from 16 MENA countries were included. Most of the research reports sourced from Iran (36.3%) and Saudi Arabia (21.6%), with an overall low RoB. In the 16 countries, the pooled prevalence of GDM was 13.0% (95% confidence interval [CI], 11.5–14.6%, I2, 99.3%). Nationally, GDM was highest in Qatar (20.7%, 95% CI, 15.2–26.7% I2, 99.0%), whereas subregionally, GDM was highest in Gulf Cooperation Council (GCC) countries (14.7%, 95% CI, 13.0–16.5%, I2, 99.0%). The prevalence of GDM was high in pregnant women aged ≥30 years (21.9%, 95% CI, 18.5–25.5%, I2, 97.1%), in their third trimester (20.0%, 95% CI, 13.1–27.9%, I2, 98.8%), and who were obese (17.2%, 95% CI, 12.8–22.0%, I2, 93.8%). The prevalence of GDM was 10.6% (95% CI, 8.1–13.4%, I2, 98.9%) in studies conducted before 2009, whereas it was 14.0% (95% CI, 12.1–16.0%, I2, 99.3%) in studies conducted in or after 2010. Pregnant women in the MENA region are burdened with a substantial prevalence of GDM, particularly in GCC and North African countries. Findings have implications for maternal health in the MENA region and call for advocacy to unify GDM diagnostic criteria.Systematic Review RegistrationPROSPERO CRD42018100629
Functional Disability After Ischemic Stroke: A Community-Based Cross-Sectional Study in Shanghai, China
Authors: Yao Ying-Ye , Wei Zi-Jun , Zhang Yue-Chan , Li Xiang , Gong Liu , Zhou Jia-Wei , Wang Yu , Zhang Yun-Yun , Wang Rui-Ping 
Published: August 2021

Objective: This study aimed to understand the demographics, functional disabilities, cognitive impairment, and depressive mood among stroke patients and to explore the correlation between functional disability and the other health conditions so as to provide some data for community rehabilitation among stroke patients.Methods: A cross-sectional study was conducted to investigate the functional status of ischemic stroke patients with stroke history between 1 month and 2 years by applying the modified Rankin Scale (mRS). Data were collected during October 2016 and January 2017 from 11 communities in two districts of Shanghai, China. We used face-to-face questionnaire interviews to collect information on sociodemographics, vascular risks associated with stroke, cognitive function [Mini-Mental State Examination (MMSE)], and depression [Patient Health Questionnaire-9 (PHQ-9)]; and we applied SPSS 24.0 for data analysis.Results: In this study, 305 patients with ischemic stroke were finally recruited, including 189 (61.97%) men, with an average age of 67 years. According to the mRS score, ischemic stroke patients were divided into patients without symptoms (controls, mRS = 0), patients without obvious disability (mRS = 1), and patients with mild to severe disability (mRS = 2–5). Ischemic stroke patients with different mRS levels demonstrated significant differences in age, tobacco smoke exposure, previous stroke history, cognitive function, and depression status. Compared with patients without symptoms (mRS = 0), patients with mRS = 1 had a lower MMSE score [odds ratio (OR): 0.48, 95% confidence interval (CI): 0.26–0.90]; and patients with mRS = 2–5 had a lower MMSE score [OR = 0.16, 95% CI: 0.08–0.33], had a higher PHQ-9 score [OR = 5.36, 95% CI: 2.19–13.11], and were more likely to have previous stroke history [OR = 2.18, 95% CI: 1.01–4.79].Conclusion: Lower degrees of functional independence are related to cognitive impairment, as well as the previous stroke history and depression status.
Improvement of Apraxia With Augmented Reality: Influencing Pantomime of Tool Use via Holographic Cues
Authors: Rohrbach Nina , Krewer Carmen , Löhnert Lisa , Thierfelder Annika , Randerath Jennifer , Jahn Klaus , Hermsdörfer Joachim 
Published: August 2021

Background: Defective pantomime of tool use is a hall mark of limb apraxia. Contextual information has been demonstrated to improve tool use performance. Further, knowledge about the potential impact of technological aids such as augmented reality for patients with limb apraxia is still scarce.Objective: Since augmented reality offers a new way to provide contextual information, we applied it to pantomime of tool use. We hypothesize that the disturbed movement execution can be mitigated by holographic stimulation. If visual stimuli facilitate the access to the appropriate motor program in patients with apraxia, their performance should improve with increased saliency, i.e., should be better when supported by dynamic and holographic cues vs. static and screen-based cues.Methods: Twenty one stroke patients and 23 healthy control subjects were randomized to mime the use of five objects, presented in two Environments (Screen vs. Head Mounted Display, HMD) and two Modes (Static vs. Dynamic) resulting in four conditions (ScreenStat, ScreenDyn, HMDStat, HMDDyn), followed by a real tool demonstration. Pantomiming was analyzed by a scoring system using video recordings. Additionally, the sense of presence was assessed using a questionnaire.Results: Healthy control participants performed close to ceiling and significantly better than patients. Patients achieved significantly higher scores with holographic or dynamic cues. Remarkably, when their performance was supported by animated holographic cues (e.g., striking hammer), it did not differ significantly from real tool demonstration. As the sense of presence increases with animated holograms, so does the pantomiming.Conclusion: Patients' performance improved with visual stimuli of increasing saliency. Future assistive technology could be implemented upon this knowledge and thus, positively impact the rehabilitation process and a patient's autonomy.
Increased Angiogenin Expression Correlates With Radiation Resistance and Predicts Poor Survival for Patients With Nasopharyngeal Carcinoma
Authors: Guo Shan-Shan , Liang Yu-Jing , Liu Li-Ting , Chen Qiu-Yan , Wen Yue-Feng , Liu Sai-Lan , Sun Xue-Song , Tang Qing-Nan , Li Xiao-Yun , Mai Hai-Qiang , Tang Lin-Quan 
Published: August 2021

Background: Despite the development of such multiple therapeutic approaches, approximately 20% patients experience recurrence. Identification of molecular markers for stratifying the different risks of tumour recurrence and progression is considered imperative.Methods: We used a RayBio Human Cytokine Antibody Array that simultaneously detected the levels of 297 proteins and profiled the conditioned medium of HONE1 cells and the radioresistant NPC cells HONE1-IR. We found Angiogenin(ANG) expression to be significantly increased in HONE1-IR and HONE1-IR cells exposed to 4-Gy X-ray radiation.Results: We investigated the expression of ANG in NPC tissues and explored its prognostic significance in patients with NPC. We found that ANG expression was increased in recurrent NPC tissues. Elevated expression of ANG induced radio-resistance in NPC cells, in addition to being significantly associated with shorter PFS, OS, and LRFS in patients with NPC. Multivariate analysis results revealed that ANG was an independent prognostic factor that predicted PFS, OS, and LRFS. Furthermore, a nomogram model was generated to predict OS in terms of ANG expression.Conclusion: Our results found the radioresistant function of ANG and proved the clinical prognostic significance of ANG, and the results could help predict radio-sensitivity and stratify high-risk patients or tumour recurrence.
Continuity in general practice as predictor of mortality, acute hospitalisation, and use of out-of-hours care: a registry-based observational study in Norway
Authors: Sandvik Hogne , Hetlevik Øystein , Blinkenberg Jesper , Hunskaar Steinar 
Published: August 2021

BackgroundContinuity, usually considered a quality aspect of primary care, is under pressure in Norway, and elsewhere.AimTo analyse the association between longitudinal continuity with a named regular general practitioner (RGP) and use of out-of-hours (OOH) services, acute hospital admission, and mortality.Design and settingRegistry-based observational study in Norway covering 4 552 978 Norwegians listed with their RGPs.MethodDuration of RGP–patient relationship was used as explanatory variable for the use of OOH services, acute hospital admission, and mortality in 2018. Several patient-related and RGP-related covariates were included in the analyses by individual linking to high-quality national registries. Duration of RGP–patient relationship was categorised as 1, 2–3, 4–5, 6–10, 11–15, or >15 years. Results are given as adjusted odds ratio (OR) with 95% confidence intervals (CI) resulting from multilevel logistic regression analyses.ResultsCompared with a 1-year RGP–patient relationship, the OR for use of OOH services decreased gradually from 0.87 (95% CI = 0.86 to 0.88) after 2–3 years’ duration to 0.70 (95% CI = 0.69 to 0.71) after >15 years. OR for acute hospital admission decreased gradually from 0.88 (95% CI = 0.86 to 0.90) after 2–3 years’ duration to 0.72 (95% CI = 0.70 to 0.73) after >15 years. OR for dying decreased gradually from 0.92 (95% CI = 0.86 to 0.98) after 2–3 years’ duration, to 0.75 (95% CI = 0.70 to 0.80) after an RGP–patient relationship of >15 years.ConclusionLength of RGP–patient relationship is significantly associated with lower use of OOH services, fewer acute hospital admissions, and lower mortality. The presence of a dose–response relationship between continuity and these outcomes indicates that the associations are causal.
Pengaruh Pemberian Hormon Auksin dan Giberelin terhadap Pertumbuhan Tomat (Solanum lycopersicum L.) Var. Aichi First
Authors: Andianingsih Nindi , Rosmala Arrin , Mubarok Syariful 
Published: August 2021

Tanaman tomat umumnya dibudidayakan di Indonesia secara komersial, terutama di dataran tinggi. Kualitas buah tomat yang baik hanya dicapai pada ketinggian 800 mdpl. Auksin dan giberelin bekerja sinergis dalam pembentukan bunga dan buah pada tanaman tomat. Pemberian hormon auksin dan giberelin pada tomat kultivar Aichi First diharapkan dapat memacu pertumbuhan, pembungaan dan pembuahan. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian hormon Auksin dan Giberelin dan untuk mendapatkan perlakuan hormon yang paling optimal terhadap pertumbuhan Aichi First. Penelitian dilaksanakan pada bulan Januari-Mei 2020 di kebun percobaan yang terletak di Desa Dadiharja, Kecamatan Rancah, Kabupaten Ciamis. Penelitian menggunakan Rancangan Acak Kelompok (RAK) non faktorial dan diulang sebanyak 3 kali. Pemberian hormon auksin dan hormon giberelin berpengaruh terhadap tinggi tanaman, akan tetapi tidak berpengaruh pada parameter diameter batang, jumlah tandan, jumlah bunga, umur berbunga, dan luas daun. Konsentrasi auksin 30 ppm + giberelin 80 ppm menghasilkan tinggi tanaman paling tinggi, yaitu sebesar 50.42 cm.