bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rancang Bangun Alat Penghapus Papan Tulis Otomatis Berbasis Arduino Uno Menggunakan Sensor Suara
Authors: Dawolo Berkat Iman Setia , Safii M. , Gunawan Indra , Parlina Iin , Saputra Widodo 
Published: October 2021

Dalam membantu dan mempermudah menjaga kebersihan, kesehatan dan efesien dalam proses belajar bengajar pada saat menghapus papan tulis banyak murid atau para pengajar yang menyebabkan tangan menjadi kotor dan berdampak pada kesehatan. Salah satu teknologi yang dapat di terapkan dalam mengatasi hal tersebut yaitu merancang suatu alat yang dapat menghapus papan tulis secara otomatis menggunakan perangkat keras (Hadware) seperti sensor suara, sensor PIR, motor DC yang berbasis mikrokontroler arduino. Dimana alat penghapus papan tulis akan berkerja dan berfungsi apabila sensor PIR mendeteksi adanya pergerakan yang memiliki pancaran infrared pasif yaitu tubuh manusia dan input suara terdeteksi pada sensor suara serta di bantu dengan pergerakan motor DC yang telah di integerasikan dengan mikrokontroler sebagai penggerak penghapus papan tulis. Dan berdasarkan hasil pengujian alat kondisi penghapus papan tulis akan bergerak dua kali bolak balik dari kiri ke kanan untuk menghapus papan tulis.
Penerapan Model Pembelajaran Project Based Learning Untuk Meningkatkan Keaktifan Dan Motivasi Belajar Siswa Kelas X Multimedia Mata Pelajaran Simulasi Dan Komunikasi Digital Di SMK Negeri 1 Mempawah Hulu
Authors: Marselus Marselus 
Published: October 2021

Penelitian bertujuan untuk meningkatkan keaktifan dan motivasi belajar siswa pada mata pelajaran Simulasi dan Komunikasi Digital di kelas X MM SMK Negeri 1 Mempawah Hulu dengan menggunakan model pembelajaran Project Based Learning. Penelitian ini merupakan Penelitian Tindakan Kelas (Classroom Action Research) yang bertujuan untuk mengatasi permasalahan yang ada di kelas. Subjek penelitian adalah siswa kelas X MM semester genap tahun ajaran 2020/2021 yang berjumlah 36 siswa. Penelitian dilakukan dalam tiga siklus dan setiap akhir siklus dilakukan refleksi terhadap tindakan yang diberikan. Teknik pengumpulan data dalam penelitian menggunakan lembar observasi, angket, dan dokumentasi. Hasil Penelitian menunjukkan bahwa pelaksanaan pembelajaran dengan menggunakan model pembelajaran Project Based Learning pada mata pelajaran Simulasi dan Komunikasi Digital dapat meningkatkan keaktifan dan motivasi belajar siswa. Hal ini dapat dilihat dari keaktifan siswa dari siklus I sebesar 71,87% meningkat pada siklus II sebesar 75,35% dan meningkat juga pada siklus III menjadi 76,77%. Motivasi belajar siswa pada siklus I sebesar 71,86% meningkat pada siklus II sebesar 74,61% dan meningkat juga pada siklus III menjadi 77,44%. Terbukti bahwa model pembelajaran Project Based Learning dapat meningkatkan keaktifan dan motivasi belajar siswa pada mata pelajaran Simulasi dan Komunikasi Digital.
PENGARUH ALAT MODIFIKASI BOLA GANTUNG TERHADAP KETERAMPILAN PASSING BAWAH DALAM PERMAINAN BOLA VOLI
Authors: Ahmad Yanuar Syauki  
Published: October 2021

Penelitian ini bertujuan untuk mengetahui Pengaruh Alat Modifikasi Bola Gantung Terhadap Keterampilan Passing Bawah dalam Permainan Bola Voli. Penelitian ini merupakan penelitian yang mengunakan deskriptif kualitatif. Teknik dalam pengumpulan data dalam penelitian ini menggunakan studi literatur yang dimana menggunakan data primer dan data sekunder. Teknik keabsahan data menggunakan triangulasi data. Hasil penelitian ini dapat disimpulkan bahwa Terdapat pengaruh alat modifikasi bola gantung terhadap keterampilan passing bawah sebelum dan sesudah pelaksanaan passing bawah bola voli dengan menggunakan alat modifikasi bola gantung. Dengan penggunaan alat modifikasi bola gantung berpengaruh secara signifikan terhadap keterampilan passing bawah dalam permaianan bola voli.
Photovoltage‐Competing Dynamics in Photoelectrochemical Devices: Achieving Self‐Powered Spectrally Distinctive Photodetection
Authors: Liu Xin , Wang Danhao , Kang Yang , Fang Shi , Yu Huabin , Zhang Haochen , Memon Muhammad Hunain , He Jr‐Hau , Ooi Boon S. , Sun Haiding , Long Shibing 
Published: October 2021

AbstractMultiple‐band and spectrally distinctive photodetection play critical roles in building next‐generation colorful imaging, spectroscopy, artificial vision, and optically controlled logic circuits of the future. Unfortunately, it remains challenging for conventional semiconductor photodetectors to distinguish different spectrum bands with photon energy above the bandgap of the material. Herein, for the first time, a photocurrent polarity‐switchable photoelectrochemical device composed of group III‐nitride semiconductors, demonstrating a positive photocurrent density of 10.54 µA cm−2 upon 254 nm illumination and a negative photocurrent density of −0.08 µA cm−2 under 365 nm illumination without external power supply, is constructed. Such bidirectional photocurrent behavior arises from the photovoltage‐competing dynamics across two photoelectrodes. Importantly, a significant boost of the photocurrent and corresponding responsivity under 365 nm illumination can be achieved after decorating the counter electrode of n‐type AlGaN nanowires with platinum (Pt) nanoparticles, which promote a more efficient redox reaction in the device. It is envisioned that the photocurrent polarity‐switch behavior offers new routes to build multiple‐band photodetection devices for complex light‐induced sensing systems, covering a wide spectrum band from deep ultraviolet to infrared, by simply engineering the bandgaps of semiconductors.
Multifunctional Optoelectronic Synapse Based on Ferroelectric Van der Waals Heterostructure for Emulating the Entire Human Visual System
Authors: Guo Feng , Song Menglin , Wong Man‐Chung , Ding Ran , Io Weng Fu , Pang Sin‐Yi , Jie Wenjing , Hao Jianhua 
Published: October 2021

AbstractThe development of optoelectronic synapses can provide an important breakthrough toward creating a sophisticated and adaptable artificial visual system analogous to that of humans. However, it remains a great challenge to implement the various functions of the biological visual neuromorphic system at the single device level. Intriguingly, 2D van der Waals (vdW) heterostructure may offer a platform to address the issue. Here, a novel multifunctional synaptic device based on ferroelectric α‐In2Se3/GaSe vdW heterojunction is proposed to emulate the entire biological visual system. Essential synaptic behaviors are observed in response to light and electrical stimuli; additionally, the retina‐like selectivity for light wavelengths and the achievement of Pavlov's dog experiment demonstrate the device's capacity for processing complex electrical and optical inputs. Beyond the optoelectronic synaptic behaviors, the device incorporates memory and logic functions analogous to those in the brain's visual cortex. The results of artificial neural network simulations show that the vdW heterojunction‐based device is completely capable of performing logic operations and recognizing images with a high degree of accuracy. The study indicates that versatile devices with a rationally designed construction have great potential for efficiently processing complex visual information and may simplify the design of artificial visual systems.
A high‐performance hybrid supercapacitor electrode based on ZnO/nitrogen‐doped carbon nanohybrid
Authors: Abdelhamid Hani Nasser , Al Kiey Sherief A. , Sharmoukh Walid 
Published: October 2021

AbstractHybrid nanomaterials offer promising properties to serve as an electrode for hybrid supercapacitors. Herein, dye (rhodamine B, RhB) encapsulated zeolitic imidazolate frameworks (RhB@ZIF‐8) was synthesized at room temperature via triethylamine (TEA)‐assisted method. The material was used as a precursor for synthesizing zinc oxide embedded nitrogen‐doped carbon (ZnO@N‐doped C) via the carbonization at different temperatures (400°C, 600°C, and 800°C). The materials were characterized using X‐ray diffraction (XRD), thermogravimetric analysis (TGA), differential thermal analysis (DTA), high‐resolution transmission electron microscope (HR‐TEM), energy‐dispersive X‐ray mapping (EDX), nitrogen adsorption–desorption isotherm, and X‐ray photoelectron microscope (XPS). ZnO@N‐doped C nanocrystals (15–20 nm) were used as an electrode for a hybrid supercapacitor. ZnO@N‐doped C exhibited a high capacitance of 1200 F·g−1 at a current density of 1 A·g−1 without losing any capacitance (87.7% of initial capacitance) even after 1000 galvanostatic charge–discharge cycles (GCDCs). The presence of a guest molecule such as RhB improved the capacitance of the carbonized ZIF‐8 two‐fold compared with the carbonized materials using conventional ZIF‐8.
Morphology, phase diagram, and properties of high‐density polyethylene/thermally treated waste polyethylene wax blends
Authors: Esmaeilzade Romina , Sharif Farhad , Rashedi Reza , Dordi Nejad Abdolkamal 
Published: October 2021

AbstractWaste polyethylene wax is thermally treated using a rotary evaporator to reduce unwanted components. Fourier transform infrared proves the absence of undesirable material. Wax is extruded with high‐density polyethylene (HDPE) at various loadings to study its morphology and final properties. Scanning electron microscopy and differential scanning calorimeter were employed to obtain the phase diagram showing the immiscibility of blends containing more than 20 wt% of wax. Due to the low melting temperature of the wax and its plasticating effect on HDPE, a decrease in melting temperature, enthalpy of fusion, and crystallinity with increasing wax content of the blend is observed. The phase diagram displays four possible phases depending on temperature and wax loading. Improved processability of HDPE/wax blends is demonstrated using complex viscosity curves. Han plots prove the miscibility of wax and HDPE in the melt state even at high concentrations of wax. HDPE/wax compounds have lower crystallinity, and wax particles, acting as weak spots, lower the elastic modulus, yield stress, and stress and strain at break as wax content increases. An increase in yield strain is observed due to the more effortless extension of HDPE chains at higher wax content. In 10 wt% of wax is accepted as the upper limit for wax incorporation into the HDPE matrix.
Anaerobic digestion of cornmeal – the effect of crude enzyme extract and co‐digestion with cow manure
Authors: Pinheiro Vanessa Elisa , Wainaina Steven , Polizeli Maria de Lourdes Teixeira de Moraes , Horváth Ilona Sárvári 
Published: October 2021

AbstractThis study examined the effect of a crude enzyme extract, containing mainly starch‐degrading enzymes, on cornmeal (Zea mays) hydrolysis. This was followed by an investigation of the effect of enzymatic treatment for the anaerobic digestion of this biomass. Cornmeal and cow manure were also co‐digested, and both batch and semi‐continuous experiments were performed. The enzymatic pretreatment of cornmeal resulted in a yield of 65 ± 5% reducing sugars, with 1:10 w/v (grams of dry substrate per mililiters of enzyme extract) enzyme load at 45 °C for 48 h. There was an 8% enhancement of methane production observed during the batch assays, both when cornmeal hydrolysate was digested and when enzymes were added directly to the digester. Synergetic effects were found when co‐digesting cornmeal and cow manure, leading to higher methane yield (280 NmL gVS–1) than that (200 NmL gVS–1) calculated based on the methane potential of the individual substrates. Regarding long‐term effects, the laboratory‐scale semi‐continuous experiments also demonstrated that the co‐digestion of cornmeal and cow manure (1:1 volatile solid (VS) basis) led to a stable process reaching an organic loading rate of 3 g VS L day–1 and achieving a daily methane production of 1280.12 ± 99.4 NmL CH4/day. However, when cornmeal was investigated in mono‐digestion, and the enzyme extract was directly added during semi‐continuous digestion of cornmeal, volatile fatty acid (VFA) accumulation was observed, leading to a decrease in pH, and no significant enhancement of the conversion into methane was observed. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd
A case of COVID‐19 with superficial thrombophlebitis caused by an indwelling peripheral venous catheter
Authors: Tachi Hiroaki , Hanazawa Midori , Matsuda Takashi , Shimizu Kei , Yamamoto Yusuke 
Published: October 2021

AbstractA local hypercoagulable state caused by SARS‐CoV‐2 and an indwelling peripheral venous catheter can lead to superficial thrombophlebitis. If the venous catheter is no longer needed during treatment for COVID‐19 it should be removed promptly.
Non‐islet‐cell tumor hypoglycemia as first manifestation of an advanced hepatocellular carcinoma
Authors: Rojbi Imen , Ben Elhaj Wiem , Mchirgui Nadia , Jrad Meriem , Ben Nacef Ibtissem , Khiari Karima 
Published: October 2021

AbstractIn a nondiabetic patient, fasting hypoglycemia is uncommon and warrants careful assessment. Although rare, NICTH should be considered in patients with recurrent hypoglycemia especially in those with risk factors for HCC.
Lactate and pyruvate levels correlation with lactate dehydrogenase gene expression and glucose consumption in Tamoxifen‐resistant MCF‐7 cells using capillary electrophoresis with contactless conductivity detection (CE‐C4D)
Authors: Alhusban Ala A. , Hamadneh Lama A. , Albustanji Sokiyna , Shallan Aliaa I. 
Published: October 2021

AbstractBreast cancer is the second leading cause of cancer death in women after lung cancer. The first‐line treatment of metastatic breast cancer in premenopausal women relies on tamoxifen. The development of tamoxifen resistance is not fully understood. In this study, capillary electrophoresis with capacitively coupled contactless conductivity detector was developed to monitor the changes in lactate and pyruvate levels in supernatant media of three models of developed MCF‐7 tamoxifen‐resistant cells and correlate these metabolites changes with lactate dehydrogenase genes expression and glucose consumption. The electrophoretic separation was achieved under reversed electroosmotic flow conditions. The linear ranges were 0.15–5 and 0.01–1 mM with a correlation coefficient of 0.9966 and 0.9971 and the limits of detection were 0.01 and 0.02 μM for lactate and pyruvate, respectively. Inter‐ and intrarun accuracy were in the range of 96.88–105.94% with precision (CV, %) of ≤7.35%. The method was completely validated and the results were in agreement with those obtained using the lactate and glucose assay kits. The results revealed a significant increase in both lactate and pyruvate production in the three tamoxifen‐resistant MCF‐7 cells models compared to control cells. This increase was correlated with the increase of lactate dehydrogenase genes expression and the increase of glucose consumption.
Prediction of UL‐94V tests performed on a wide range of polymeric materials using a comprehensive pyrolysis model coupled with an empirical flame heat feedback model
Authors: McCoy Conor G. , Stoliarov Stanislav I. 
Published: October 2021

SummaryPreviously, a model of the UL‐94V test combining a comprehensive two‐dimensional pyrolysis model with an empirical heat feedback model of the burner and polymer flames was developed and tested using extruded poly(methyl methacrylate) (PMMA). PMMA samples with and without insulated sides were used to investigate edge effects: the propensity for the flame to ignite and spread at the edges. Flame growth dynamics were quantified by processing video recorded at 900 nm wavelength. UL‐94V tests were simulated using a numerical solver, ThermaKin2Ds; flame length was predicted well for the insulated samples but not for the non‐insulated samples, likely due to edge effects. In this study, the model was evaluated against UL‐94V tests of seven other polymers of different UL‐94V ratings, using both insulated and non‐insulated samples. Thermogravimetric analysis was performed in 5 vol% oxygen to check the materials' sensitivity to oxygen; only high‐impact polystyrene was affected, for which a surface oxidation expression was developed. For the materials that sustain flame, predictions of flame spread for insulated samples were good after dripping and soot accumulation were considered, although initial flame length was underpredicted for two materials. Predictions for the non‐insulated samples were worse for all materials, likely due to edge effects. For the materials that did not sustain flame, the model predicted extinction correctly in 50% of them. It was unable to predict extinction due to gas‐phase flame inhibition since such effects are not included in the model. However, for these materials, predicted flame lengths before extinction were excellent.
How prevalent and severe is addiction on GABAmimetic drugs in an elderly German general hospital population? Focus on gabapentinoids, benzodiazepines, and z‐hypnotic drugs
Authors: Bonnet Udo , McAnally Heath B. 
Published: October 2021

AbstractObjectiveGabapentinoids (GPT) are reported to be increasingly misused by opioid‐ and polydrug‐users, but the addictive potential of GPT outside of these populations remains understudied. Investigations comparing GPT abuse and dependence liability to that of other commonly prescribed Central Nervous System‐acting medications are therefore warranted. We provide a comparison of GPT‐abuse/dependence to that of other GABAmimetics within an elderly population.DesignDSM‐IV‐TR‐based data (previously prospectively collected by SKID‐I‐interview) from a random sample of elderly patients admitted to a metropolitan German general hospital were reviewed. The prevalence and severity of GPT, benzodiazepine (BDZ), and z‐hypnotic drug (ZD)‐abuse and ‐dependence were compared, stratified also by mono‐substance (no concurrent current or previous substance use) and de novo‐substance (first)‐abuse and ‐dependence states.ResultsAmong 400 patients (75 ± 6.4 years old; 63% females), neither current nor past abuse of BDZ, ZD or GPT, nor other illicit substances was observed. Dependence upon BDZ, ZD or GPT was observed among 55 (13.75%) individuals. The related lifetime/12‐month prevalence‐rates were: dependence condition (BDZ: 7%/2.45%; ZD: 4.25%/4.25%; GPT: 2.75/2.5%); mono‐dependence condition (BDZ: 2.25%/0.75%; ZD: 1%/1%, GPT: 0%/0%); de novo‐dependence condition (BDZ: 2.75%/1.75%; ZD: 1%/1%, GPT: 0.5%/0.5%). Opioid analgesic‐dependence (N = 43/400) was significantly more frequently linked with BDZ than with GPT (p < 0.01) [Correction added on 29 December 2021, after first online publication: In the sentence ‘Opioid analgesic‐dependence…’, the term ‘and ZD’ has been deleted]. For all three GABAmimetic classes, most mono‐ and de novo‐dependence states were mild‐to‐moderate and lasted 2–6 years (median).ConclusionGABAmimetic‐dependence was usually mixed with other substance‐dependences. Every third to fourth instance of BDZ‐ or ZD‐dependence was a mono‐dependence condition, while a pure GPT‐dependence was absent in this elderly (and illicit substance‐naïve) population.
Predicting Maximal Costal Cartilage Graft Size for Laryngotracheal Reconstruction
Authors: Wolter Nikolaus E. , Vilchez‐Madrigal Luis D. , Gorodensky JH Jonah H. , Greer Mary‐Louise C. , Peer Shazia , Highmore Kerri , Padfield Nancy , Holowka Stephanie , Propst Evan J. 
Published: October 2021

Objectives/HypothesisCurrent methods of assessing rib cartilage dimensions for laryngotracheal reconstruction (LTR) are inexact, making surgical planning difficult. The purpose of this study was to determine the most appropriate rib for costal cartilage graft LTR to minimize the number of ribs harvested and improve surgical outcomes.Study DesignRetrospective review.MethodsComputed tomography imaging of chest scans in 25 children aged 1 to 18 years was evaluated. The lengths and widths of medial and lateral cartilaginous segments of ribs 4 to 7 were measured bilaterally. Right and left cartilaginous rib dimensions were compared using a two‐sample t‐test. Linear mixed‐effect regression was performed to develop models quantifying the relationship between rib size and patient height, rib side, and rib number.ResultsRegression analysis established strong models for medial rib length (R2 = 0.89) and for medial and lateral rib width (R2 = 0.71, 0.77, respectively). There was no difference in rib dimensions across chest sides. Rib length and width increased with child height. Total cartilaginous rib length increased from superiorly to inferiorly, primarily due to an increase in the dimensions of the medial portion of each rib.ConclusionCartilaginous rib lengths and widths were associated with patient height, with taller children having longer ribs. Inferior ribs were longer than superior ribs, suggesting that inferior ribs may be preferred for LTR. There was no difference in cartilaginous rib length across chest side. Results may help surgeons with preoperative planning.Level of EvidenceNA Laryngoscope, 132:1682–1686, 2022
Modeling the effect of wastewater irrigation on soil salinity using a SALT‐DNDC model
Authors: Shah Syed Hamid Hussain , Wang Junye , Hao Xiying , Thomas Ben W. 
Published: October 2021

AbstractWastewater has been widely reclaimed to irrigate crops where freshwater resources are scarce. Therefore, predicting the impacts of wastewater irrigation on soil moisture and soil salinity is critical for sustainable wastewater irrigation management. In this study, the denitrification‐decomposition (DNDC) model was modified to couple wastewater irrigation with a water balance equation (SALT‐DNDC). Secondly, the SALT‐DNDC model was verified against the measured soil moisture, temperature, and nitrous oxide emission during the barley‐growing season at Lethbridge, Alberta, Canada. Third, the SALT‐DNDC model was used to predict the effects of one‐time and split wastewater irrigation with varying quantity and quality on transpiration and soil salinity. The results showed that split irrigation of wastewater with an electrical conductivity of 6 dS m−1 reduced the peak soil salinity from 52–55 dS m−1 to a range of 8–20 dS m−1, compared to one‐time irrigation. Therefore, the split irrigation of wastewater could substantially reduce peak soil salinity. In this regard, optimal split wastewater irrigation with elevated salt concentration can limit soil salinity to acceptable salt tolerance levels for crop growth. The SALT‐DNDC model can simulate dynamics of split irrigation wastewater and offers a new tool for assessing the effects of wastewater reuse on soil salinity.