bluuebunny/crossref_metadata_2025_split huggingface dataset:
A New Circulating Accumulation Emission Model for Assessing Dust Emission From Open Pit Mine
Authors: Wanjun TANG , Fengming LI 
Published: August 2021

Abstract
In order to reduce the inaccuracy of using the monitoring data outside the pit to evaluate the unorganized emission dust source of open pit mine, the circulating accumulation emission model is established. Based on the model, the monitoring data in the pit can be converted into the dust emission from the pit. Main conclusions include: (1) the circulating accumulation emission model is suitable for the dust diffusion process in open pit mine. The model contains three part, which correspond to dust emission, retention and diffusion in open pit mine. (2) The initial value of the dust in the pit before the team operation has little influence on the final stable value. (3) The dust background value of surrounding environment monitored outside the pit can not be directly used. When the dust enters the pit, it will accumulate under the action of eddy current. To eliminate the effect of background value, the monitoring data should be subtracted by the accumulated value. (4) The dust emission from the pit can be calculated in a certain monitoring period based on the circulating accumulation emission model. Hence the dust emission assessment of open pit can be completed more efficiently based on this model.
Research on Shimmy Characteristics and Control Strategy of Double-Axle Steering Mechanism with Multiple Limit Cycles Considering Vehicle-Road Coupling
Authors: Zhang Yuhang , Wei Daogao , Jiang Tong , Zhang Bingzhan , Wang Wei 
Published: August 2021

Abstract
The vehicle and the road are a coupled system, the road surface characteristics have a great influence on the vehicle's handling stability and driving safety. So in this study, A 9-DOF mathematical model of dual-axle steering mechanism considering the vehicle-road coupling is established. Taking one multi-axle vehicle with dual-axle steering mechanism for example, the numerical calculation method is used to reproduce the multiple limit-cycles shimmy, and the effects of the road adhesion coefficient on the multiple limit-cycles shimmy characteristics is analyzed. The results show that the maximum swing angles of first and second axle and the speed ranges of multiple limit-cycles shimmy occurring decrease with the road adhesion coefficient decreasing, and as the road adhesion coefficient decreases, the speed range of multiple limit-cycles occurring tend to shrink to the middle speed range(40-50km/h) which is multi-axle vehicles often travelling. In addition, we also found that the multiple limit-cycles shimmy characteristic of the dual-axle steering mechanism is more sensitive to the change of the road adhesion coefficient of second axle than the change of the road adhesion coefficient of first axle. This finding can provide theoretical guidance for suppressing multiple limit-cycles shimmy of multi-axle vehicle with dual-axle steering mechanism. Finally, we propose a control strategy for the multiple limit cycle shimmy phenomenon, which reduces the amplitude of the shimmy and the interval of multiple limit cycles.
Association of TM6SF2 rs58542926 with Hepatic and Extrahepatic Alterations in Chronic Hepatitis C Patients
Authors: Abdul Mohi I. Mohammed , Vitiello Adriana , Ghassabian Hanieh , Eltahir Heba M. , Hassan Elham Ahmed , Bekhit Amany A. , Ahmed Abo Bakr F. , Ahmed Hany E.A. , Abouzied Meky M. , Elbadawy Hossein , Calistri Arianna , Alvisi Gualtiero , Thabet Khaled 
Published: August 2021

Abstract
Human genetic variants play major roles in predicting and prognosis of several diseases. The effect of rs58542926 variant in transmembrane 6 superfamily member 2 (TM6SF2) gene on liver fibrosis among patients with chronic hepatitis C (CHC) is still debatable. The aim of this study is to investigate the possible effects of this variant in CHC patients. The study comprised 351 subjects: 250 CHC patients with different fibrosis stages (F0-F4) and 101 healthy volunteers. TM6SF2 (rs58542926) genotype was determined for all subjects. Blood samples were collected for complete blood count and biochemical analysis and cohort subjects were genotyped for the variant TM6SF2 rs58542926. Fibrosis staging was performed using Fibrotest and Fibroscan standard tests. The presence of the minor allele was significantly associated with severe liver fibrosis, as well as thrombocytopenia as an extrahepatic alteration. In addition, there was a significant association between the minor allele and lower thrombopoietin levels. The association of TM6SF2 genotype with thrombocytopenia was explored by measuring plasma thrombopoietin (TPO) levels for CHC patients. The results showed an association with extrahepatic alteration (thrombocytopenia) through its effect on plasma TPO level, and consequently on platelets production, which raises questions about the role of this variant in HCV treatment outcome. In conclusion, the occurrence of the minor allele of the variant rs58542926 can be linked to severe fibrosis stages as well as thrombocytopenia, enabling this variant to be used as a diagnostic pharmacogenetic marker for predicting the risk of fibrosis onset in CHC patients.
Factors associated with the development of secondary cancers after radioiodine therapy in differentiated thyroid cancer: A multicenter retrospective study
Authors: Hong Chae Moon , Shin Ji-Yeon , Kim Byeong Il , Song Ho-Chun , Yoon June-Kee , Won Kyoung Sook , Kim Seong-Min , Cho Ihn Ho , Jeong Shin Young , Lee Sang-Woo , Lee Jaetae 
Published: August 2021

Abstract
Purpose

The objective of this study was to estimate the incidence of secondary cancers and the factors associated with their development among patients who underwent radioiodine therapy (RIT) with differentiated thyroid cancer.
Methods

We retrospectively collected medical records for patients who underwent first RIT between January 1, 2000 and December 31, 2005 from seven tertiary hospitals in South Korea after total thyroidectomy for differentiated thyroid cancer. Cancer incidence and calculated standardized rate ratio was compared with Korean cancer incidence data. The association between the development of secondary cancers and various parameters was analyzed by Cox-proportional hazard regression.
Results

A total of 3106 patients were included in this study. Mean age at the time of diagnosis of thyroid cancer was 45.7 ± 13.3 years old, and 2669 (85.9%) patients were female. The follow-up period was 11.9 ± 4.6 (range, 1.2–19.6) years. A total of 183 secondary cancers (5.6%), which included 162 solid and 21 hematologic cancers occurred in 173 patients. There was no significant difference between solid cancer incidence in our study population who underwent RIT and the overall Korean population, but the incidence of hematologic cancers and total cancer in our study was significantly higher compared with that of the Korean population. A multivariate analysis identified independent prognostic factors for the development of secondary cancer including age at 1st RIT, male, and total cumulative dose over 200 mCi.
Conclusion

We need to assess the risk benefit for patients who receive over 200 mCi of a total cumulative dose.
Quantitative Evaluation of Weathering Degree through Fuzzy-AHP Method and Petrophysics Analysis for Sandstone Carvings
Authors: Shao Mingshen , Xu Dong , Wang Yuchao , Wang Ziyi , Liang Xingzhou , Li Li 
Published: August 2021

Abstract
Study on weathering degree assessment of sandstone carvings play an important role in scientific conservation. However, current state of research on weathering assessment cannot reach the needs of scientific evaluation. In this study, the selected sandstones originate from Jurassic and, soluble salt and acid simulation experiments were carried out on standard samples. The weight, specimen surface hardness, ultrasonic velocity and water absorption are measured by means of the non-destructive methods. Furthermore, mineral composition and petrophysical properties are analyzed on small specimens in laboratory. It is revealed that the main mineral, such as quartz and feldspar, is shown by oblate and prolate in shape. Moisture content has great influence on compressive strength of rock samples. Rock porosity increases with deterioration process. The decrease of quality, surface hardness and ultrasonic velocity with increasing cycles. Conversely, water absorption capillary increase over cycles. In addition, Fuzzy-AHP method is adopted to further evaluate weathering degree on experiment samples. Results in macroscopic show that the value of weathering degree is 0.3271 for sodium sulfate solution, which is shown by moderate weathering; 0.1951 for pH = 1 sulfuric acid and 0.1060 for pH = 2 sulfuric acid, which is characterized by low weathering; 0.0516 for pH = 3 sulfuric acid and 0.0421 for pH = 4 sulfuric acid, belonging to very low weathering.
Effect of fluensulfone on different functional genes of root-knot nematode Meloidogyne incognita
Authors: Hada Alkesh , Singh Divya , Venkata Satyanarayana Kranti Kavalipurapu Veera , Chatterjee Madhurima , Phani Victor , Rao Uma 
Published: August 2021

Abstract

Meloidogyne incognita is an obligate plant-parasitic nematode causing serious damage to agricultural crops. Major constraints in nematode management arose due to the limited availability of non-fumigant nematicides in conjunction with the considerable ill effects of fumigants on human and non-target organisms. Recently, fluensulfone has been reported to be an effective non-fumigant nematicide against plant-parasitic nematodes and the model nematode Caenorhabditis elegans. The nematicidal efficacy varies according to its concentration at the time of application, exposure timing, nematode species variability, and even across subpopulations within the same species. It interferes with the key physiological processes of nematodes, like motility, behavior, chemosensation, stylet thrusting, infectivity, metabolism, lipid consumption, tissue integrity, oviposition, egg hatching, and survival. However, the molecular basis of these multivariate physiological anomalies is still largely unknown. Quantitative real-time PCR was carried out to understand the acute transcriptional perturbation of 30 functional genes associated with key physiological and life processes in a M. incognita population, following exposure of 10, 50, and 100 ppm of fluensulfone for 5 and 10 hr. The chemical treatment resulted in significant downregulation of all the neuropeptidergic genes, with concomitant repression of majority of genes related to chemosensation, esophageal gland secretion, parasitism, fatty acid metabolism, and G-protein coupled receptors. Collectively, the parasitism genes were found to be perturbed at highest magnitude, followed by the GPCRs and neuropeptidergic genes. These results establish the wide ranging effect of fluensulfone on various metabolic and physiological pathways of nematode.
The Effectiveness of Bank Aceh Syariah Conversion Decisions
Authors: Pambuko Zulfikar Bagus , Pramesti Diesyana Ajeng 
Published: August 2021

Abstract: Since 2008, Indonesia has had a particular policy for Islamic windows to spin off into full-fledged Islamic banks separate from their conventional parent if they meet the criteria. In the case of Bank Aceh Syariah, since Q3 2016, the spin-off has been done through a conversion mechanism from Bank Aceh to Bank Aceh Syariah. The study aims to analyze the effectiveness of conversion decisions in Bank Aceh Syariah. Non-parametric test with the Wilcoxon signed-rank is used to analyze the banking performance due to the conversion. The performance indicators tested in the study are capital adequacy, liquidity risk, profitability, and management efficiency over Q2 2014 until Q3 2018. The results suggest that the conversion decision of Bank Aceh Syariah is effective in correcting the non-performing financing (NPF) ratio but declining the level of profitability through ROA, ROE, and NOM ratio. Thus, the spin-off decision through the conversion mechanism needs to forecast the future financial performance and the effort to fulfill sharia compliance.Abstrak: Sejak 2008, Indonesia memiliki kebijakan khusus bagi perbankan syariah yang mewajibkan UUS untuk melakukan spin-off menjadi BUS yang terpisah dari bank konvensional induknya jika telah memenuhi kriteria. Pada kasus Bank Aceh Syariah, sejak kuartal III 2016 telah dilakukan spin-off melalui mekanisme konversi dari Bank Aceh menjadi Bank Aceh Syariah. Tujuan penelitian ini adalah untuk menganalisis efektivitas keputusan konversi Bank Aceh Syariah. Pengujian non parametrik dengan uji Wilcoxon digunakan untuk menganalisis kinerja keuangan akibat konversi. Indikator kinerja yang diuji dalam studi ini adalah permodalan, risiko likuiditas, profitabilitas, dan efisiensi manajemen pada periode Q2 2014 hingga Q3 2018. Hasil penelitian ini menunjukkan bahwa keputusan konversi Bank Aceh Syariah efektif dalam memperbaiki rasio pembiayaan bermasalah (NPF), namun menurunkan tingkat profitabilitas melalui ROA, ROE, dan NOM. Dengan demikian, keputusan spin-off melalui konversi perlu mempertimbangkan capaian kinerja keuangan di masa mendatang, selain sebagai upaya pemenuhan kepatuhan terhadap syariah.
Optimal design of integrated main supporting structure with ultra-light weight and high stability for space camera
Authors: Yin Xiaolin , Zhang Binzhi , Zhang Xin , Wei Lei , Zhang Le , Song Chi , Yin Longhai 
Published: August 2021

To ensure excellent performance of a micro reflective space camera, an integrated main supporting structure (IMSS) combined with a thin-walled tube and a supporting rod structure design is applied in this study. Firstly, this paper covers the design and comparison of the performance of three traditional types of main supporting structures (MSS), including thin-walled cylinder type, rod-supporting type and truss type. Then, an IMSS combined with a thin-walled tube and a supporting rod structure is described. In addition, a multi-objective integrated optimization method which allows automatic modeling, analysis, calculation and optimization is proposed. Further, the influence of the supporting rod angle on the structure performance is studied, the performance of stiffness, deformation and mass is better when the height ratio of the rod-structure and the thin-walled cylinder is 6:1. The IMSS mass is only 0.56 kilograms, that is 11.2 % of the total mass of the payload, and the maximum deformation on the supporting bar is no more than 4.5 nm. Finally, the IMSS performance is analyzed by the finite element method and experimental verification, and the first order frequency is up to 192.7 Hz. The degree of light weight is significantly better than that of the traditional structures. The results of the experiment further prove the stability of the IMSS.
Experiments based comparative evaluations of machine learning techniques for leak detection in water distribution systems
Authors: Kammoun Maryam , Kammoun Amina , Abid Mohamed 
Published: August 2021

Abstract
Leakage in water distribution systems is a significant long-standing problem due to the huge economic and ecological losses. Different leak detection studies have been examined in literature using different types of technologies and data. Currently, although machine learning techniques have achieved tremendous progress in outlier detection approaches, they are still limited in terms of water leak detection applications. This research aims to improve the leak detection performances by refining the choices of learning data and techniques. From this perspective, commonly used techniques for leak detection are assessed in this paper, and the characteristics of hydraulic data are investigated. Four intelligent algorithms are compared, namely k-nearest neighbors, support vector machines, logistic regression, and multi-layer perceptron. This study focuses on six experiments based on identifying outliers in various packages of pressure and flow data, yearly data, seasonal data, night data, and flow data difference to detect leakage in water distribution networks. Different scenarios of realistic water demand in two networks from the benchmark dataset LeakDB are used. Results demonstrate that the leak detection accuracy varies between 30% and 100% depending on the experiment and the choices of algorithms and data.
A comprehensive comparative analysis of deep learning tools for modeling failures in smart water taps
Authors: Offiong N. M. , Wu Y. , Muniandy D. , Memon F. A. 
Published: August 2021

Abstract
Predicting early-stage failure in smart water taps (SWT) and selecting the most efficient tools to build failure prediction models are many challenges that water institutions face. In this study, three Deep Learning (DL) algorithms, i.e., the Long Short-Term Memory (LSTM), Convolutional Neural Network (CNN) and Bi-directional Long Short-Term Memory (BiLSTM), were selected to analyse and determine the most appropriate among them for failure prediction in SWTs. This study uses a historical dataset acquired from smart water withdrawal taps to determine the most efficient DL neural network architecture for failure prediction in the SWT, leading to a hybrid model's development. After a comprehensive evaluation of the three ML models, findings show that a hybrid combination of the CNN and Bi-LSTM (CNN-BiLSTM) models is a better solution for investigating failures in the SWT.
Studi Evaluasi Pengerukan Sedimen Pada Central Sediment Sump di Lokasi Penambangan Emas PT. Bumi Suksesindo Kabupaten Banyuwangi
Authors: Cunanda Yana , Asmaranto Runi , Wicaksono Prima Hadi 
Published: August 2021

Central Sediment Sump is the largest sedimentation pond in the gold mine of PT. Bumi Suksesindo. Central Sediment Sump accommodates sediment from region Central Waste Dump (CWD), Pit E, and Pit B West. There is an increases in ore production began in 2018 makes the mining rate up to 8,1 million tons/year. This result increased sediment rates that are accommodated by Central Sediment Sump. The evaluation in this study is based on the amount of dredged sediment volume during 2018 with the volume of sediment that has been accommodated in the Central Sediment Sump. The volume of sediment that came from erosion in the Central Sediment Sump catchment area will be accommodated in the Central Sediment Sump. Dredged sediment volume depends on the bucket size excavators, excavator cycle times, and excavator work times. Excavator work time concern with the time needed to move the sediment volume that is already determined. The results evaluation of dredging sediment will describe sufficient whether or not sediment dredging in 2018 to dredge the sediment accommodated in Central Sediment Sump. Based on the results of this study the volume of sediment accommodates in Central Sediment Sump is 2.004.551,730 m3. Dredged sediment volume during 2018 is 11.755,310 m3. Therefore dredging sediment in 2018 insufficient to dredge all the sediment accommodates in Central Sediment Sump.Â Central Sediment Sump merupakan kolam pengendapan sedimen terbesar di Penambangan EmasÂ PT. Bumi Suksesindo. Central Sediment Sump menampung sedimen dari kawasan Central Waste Dump (CWD), Pit E, dan Pit B West. Adanya peningkatan produksi bijih mulai tahun 2018 menjadikan laju penambangan hingga 8,1 juta ton/tahun. Peningkatan ini mengakibatkan meningkatnya laju sedimen yang ditampung Central Sediment Sump. Evaluasi yang dilakukan pada studi ini berdasarkan pada jumlah volume sedimen terkerukÂ selama tahun 2018 terhadap volume sedimen yang tertangkap di Central Sediment Sump. Volume sedimen yang berasal dari hasil erosi di daerah tangkapan air Central Sediment Sump akan tertangkap di Central Sediment Sump. Volume sedimen terkeruk tergantung pada ukuran bucket excavator, waktu siklus excavator, dan waktu kerja excavator. Waktu kerja excavator menggambarkan waktu yang diperlukan untuk memindahkan volume sedimen yang sudah ditentukan. Hasil evaluasi pengerukan sedimen akan menggambarkan cukup atau tidaknya pengerukan sedimen tahun 2018 untuk mengeruk sedimen yang tertangkap di Central Sediment Sump. Berdasarkan hasil studi ini diperoleh volume sedimen yang tertangkap di Central Sediment Sump sebesar 2.004.551,730 m3. Volume sedimen terkeruk selama tahun 2018 sebesar 11.755,310 m3. Sehingga pengerukan sedimen tahun 2018 tidak mencukupi untuk mengeruk seluruh volume sedimen yang tertangkap di Central Sediment Sump.
Studi Pola Operasi Normal Waduk Mamak di Kabupaten Sumbawa Provinsi Nusa Tenggara Barat
Authors: Kurnianto Noval Irfan , Wahyuni Sri , Sholichin Moh. 
Published: August 2021

The reservoir operation of Mamak reservoir in Sumbawa Regency Province of West Nusa Tenggara with trial and error method and itâ€™s also not equipped with Rule Curve for Reservoir Operation so Itâ€™s faced with limited water availability in water releasing for dry season.The purpose of this study was to analyze about potential inflow and the irrigation water requirement based on planting pattern scenario. From the analysis that has been done is expected to provide an overview about the rule curve of normal operation. ByÂ Â± 81,87 million m3 of potential inflow in wet season and Â± 41,14 millionÂ m3 in dry season, the lowest irrigation water requirement was found on MT â€“ I December-1, in wet season need to apply K factor = 0,70 for MT-I and K factor = 0,60 for MT-II to reduce that number of irrigation water requirement by Â±38,73 million m3.In analyzing irrigation water requirement, It also planned with three period of planting pattern scenario so the amount of irrigation water requirement equals to 61,23 million m3 in wet season, and in dry season need to apply K factor = 0,70 for MT-I and K factor = 0,60 for MT-II. Operator can set water level on normal operation area based on the rule curve of normal operation.
Studi Pola Operasi Pintu Berdasarkan Routing Kapasitas Pengaliran Intake Menara Pada Bendungan Semantok Kabupaten Nganjuk
Authors: Rahmadani Siska , Sayekti Rini Wahyu , Sisinggih Dian 
Published: August 2021

Semantok Dam was build to supply water for irrigation with total area of the irrigated is 1825 ha including six weirs with a minimum requirement of 3,943 m3/s. To distribute the water for irrigated, so in this study need to use the operating pattern based on the intake routing capacity in main DAM with the intake tower.Â Â The operating pattern of the intake door opening needs to be appropriate to prevent problems in water distribution with one-valve and two-valves. The total height loss that happens along intake tower is 6,135 m, here in after used for routing. Â In operation pattern routing method in one year using one-valve itâ€™s fulfill the discharge 83,33% and with two-valve discharge operation pattern fullfilled 16,67%. Furthermore in the escape channel thereâ€™s flow affected by the valve, itâ€™s sub critical flow and also stilling basin ogee IV.Â Bendungan Semantok dibangun untuk menyuplai kebutuhan air irigasi Â seluas 1825 ha meliputi enam bendung (Bendung Rejoso, Bendung Margomulyo, Bendung Ngomben, Bendung Jatirejo, Bendung Janeng, dan Bendung Jati) dengan debit suplai sebesar 3,943 m3/dt. Guna menyuplai kebutuhan air irigasi, maka dalam studi ini merencanakan pola operasi pintu berdasarkan routing kapasitas intake di bendungan dengan bangunan intake Menara. Pola operasi bukaan pintu intake perlu disesuaikan guna mencegah masalah pendistribusian air dengan bukaan katup yang digunakan 1 (satu) katup dan 2 (dua) katup. Kehilangan tinggi yang terjadi sepanjangÂ intake Menara sebesar 6,135 m yang selanjutnya digunakan untuk melakukan routing. Pada pola operasi metode routing dalam satu tahun menggunakan Â 1 (satu) katup memenuhi debit suplai sebesar 83,333% dan pola operasi 2 (dua) katup memenuhi debit suplai 16,667%. Selanjutnya saluran pengarah akhir terdapat aliran yang mempengaruhi setelah pintu katup yaitu aliran sub kritis serta tipe peredam energi ogee IV.