bluuebunny/crossref_metadata_2025_split huggingface dataset:
Flat top optical frequency combs based on a single-core quantum cascade laser at the wavelength of ~8.7 μm
Authors: Yu Ma , Wei-Jiang Li , Yun-Fei Xu , Jun-Qi Liu , Ning Zhuo , Ke Yang , Jin-Chuan Zhang , Shen-Qiang Zhai , Shu-Man Liu , Li-Jun Wang , Feng-Qi Liu 
Published: November 2022

Abstract
We present optical frequency combs with a spectral emission of 48 cm-1 and an output power of 420 mW based on a single-core quantum cascade laser at λ~8.7 μm. A flat top spectrum sustains up to 130 comb modes delivering ~3.2 mW of optical power per mode, making it a valuable tool for dual comb spectroscopy. The homogeneous gain medium, relying on a slightly-diagonal bound-to-continuum structure, promises to provide broad and stable gain for comb operating. Remarkably, the dispersion of this device is measured within 300 fs2/mm to ensure stable comb operation over 90% of the total current range. The comb is observed with a narrow beatnote linewidth around 2 kHz and has weak dependence on the applied current for stable comb operation.
Analytical and numerical study of chirped optical solitons in a spatially inhomogeneous polynomial law fiber with parity-time symmetry potential
Authors: Zhong Yu , Triki Houria , Zhou Qin 
Published: November 2022

Abstract
This work studies the dynamical transmission of chirped optical solitons in a spatially inhomogeneous nonlinear fiber with cubic-quintic-septic nonlinearity, weak nonlocal nonlinearity, self-frequency shift and parity-time (




) symmetry potential. A generalized variable-coefficient nonlinear Schrödinger equation that models the dynamical evolution of solitons has been investigated by the analytical method of similarity transformation and the numerical mixed method of split-step Fourier method and Runge–Kutta method. The analytical self-similar bright and kink solitons, as well as their associated frequency chirps, are derived for the first time. We found that the amplitude of the bright and kink solitons can be controlled by adjusting the imaginary part of the




-symmetric potential. Moreover, the influence of the initial chirp parameter on the soliton pulse widths is quantitatively analyzed. It is worth emphasizing that we could control the chirp whether it is linear or nonlinear by adjusting optical fiber parameters. The simulation results of bright and kink solitons fit perfectly with the analytical ones, and the stabilities of these soliton solutions against noises are checked by numerical simulation.
Synthesis of Carbon from Yellowfin Tuna Fishbone to Remove Iron (Fe) Metal in Well Water from Bandar Setia
Authors: Ritonga Fatima Sari , Humaidi Syahrul , Sitorus Zuriah 
Published: November 2022

Abstract
The performance of tuna fishbone waste as carbon to remove iron (Fe) metal from well water was studied. The parameters of carbon synthesis were set by varying the carbonization temperature of 300, 400, and 500°C. Fishbone carbon was characterized using Scanning Electron Microscopy (SEM-EDX), X-ray Diffraction (XRD), and SSA (nitrogen adsorption). The BET and (BJH) analysis showed that the increase in carbon surface area and pore size was proportional to the increase in carbonization temperature. Fishbone carbon was used as a filtration medium to reduce high levels of iron metal in well water. Samples were taken from wells belonging to residents in Bandar Setia, Medan Tembung. Fishbone carbon was effective as an adsorbent for removing iron metal from well water by the filtration method. The rate of iron removal was 99% for fishbone carbon, carbonized at 400°C.
Colorimetric Sensor for Measuring Bleaching Benzoyl Peroxide (BPO) Content in Wheat Flour Based on Perovskite CsPbBr3 Nanocrystal: A Preliminary Study
Authors: Bahtiar A , Ginanjar G G 
Published: November 2022

Abstract
Benzoyl peroxide (BPO) is one of the bleaching agents for flour that is widely used in food products, such as bread and noodles, which if consumed continuously can cause health problems. An excess of BPO in the body will cause vertigo, vomiting, neurasthenia, and a variety of diseases, resulting in serious damage to the liver and other organs. In this work, a colorimetric sensor using CsPbBr3 nanocrystal (NC) was studied to measure the BPO concentration in the solution. The halogen ion exchange reaction between CsPbBr3 NCs and iodine (I−) was carried out by adding oleylammonium iodide (OLAM-I) to the CsPbBr3 NC solution. The results show that the originally green emission of CsPbBr3 NC (515 nm) is turned into red-pink (660 nm) after addition with OLAM-I due to iodide ions exchange with bromide ions in CsPbBr3 NCs. The wavelength shift was occurred rapidly, only in 1 minute. The emission of CsPbBr3+OLAM-I (660 nm) solution was blue-shifted rapidly within 1-2 minutes after BPO addition. The magnitude of the emission wavelength shift proportional to the concentration of BPO concentration, with a higher concentration leads a higher wavelength shift (Δλ). Therefore, this wavelength shift can be used as rapid and real-time sensor for detecting BPO content in the real samples of white flour and noodles.
The Analysis of Triaxial Passive Seismic Signal Data Using Python Scripting Language
Authors: Fazriati Evi , Bahri Ayi Syaeful , Rosandi Yudi 
Published: November 2022

Abstract
The local geological and the physical conditions of earth’s ground defines its vibration characteristics. Such vibrations can be detected using conventional passive seismic methods, i.e., a microtremor recording method, which acquires ground vibration data in a suitable sampling time. The method utilizes natural seismic sources, originating from both natural and artificial sources. In this work we present the algorithm to process passive seismic signals, recorded from a laboratory developed triaxial seismic logging device. We use python scripting language to perform the signal processing work. We analyzed the Horizontal to Vertical Spectral Ratio (HVSR) of the signal to determine the on-site natural frequency. The results were compared to the reference data from a high sensitivity microtremor apparatus, at the exact same location. The results show a fair agreement between the low sensitivity and the high sensitivity seismometer, on the sites with low environmental disturbance. However, the values fluctuate significantly at noisy sites. Either way, our results measure the correct dominant frequencies as expected from the geological condition.
Design and optimization of the CEPC scintillator hadronic calorimeter
Authors: Shi Yukun , Zhang Yunlong , Ruan Manqi , Liu Jianbei 
Published: November 2022

Abstract
The Circular Electron Positron Collider (CEPC) is a next-generation electron–positron collider proposed for precision measurement of the properties of the Higgs boson. A major challenge for the CEPC detector is achieving a boson mass resolution (BMR) of 4%, which is required to separate the Higgs, Z, and W bosons in their hadronic decays. The baseline design of the CEPC detector was guided by the particle flow algorithm (PFA) concept to satisfy the BMR requirements. The BMR performance obtained by the PFA approach is primarily determined by the shower separation capability and energy resolution of the calorimeters of the detector system. A hadronic calorimeter with high granularity is crucial for providing the required separation power and energy resolution for the desired BMR. In this context, the analogue hadron calorimeter (AHCAL), a scintillator hadronic calorimeter with analogue readout, is a potential hadronic calorimeter option for the CEPC detector. In this study, key design parameters of the AHCAL, including scintillator cell size, number of sampling layers, absorber thickness, and scintillator thickness, were optimized for BMR performance on the benchmark process of e
+
e
- ⟶ νν̅H,H ⟶ gg. Notably, herein, a set of optimized design parameters is presented for the CEPC AHCAL that meets the required BMR with reduced readout channels. Specifically, the set of proposed AHCAL design parameters is as follows: 40 sampling layers, 20 mm steel thickness, and 40× 40× 3 mm3 scintillator size for every tile. This design achieves a BMR of 3.73% and remarkably reduces the number of readout channels.
Effect of N Fertilizer on the Amount of Chlorophyll and the Quality of Tomatoes (Lycopersicon Esculentum)
Authors: Andaresta Alisha , Miftakhurrohmat A. , Nurmalasari Intan Rohma , Arifin Saiful 
Published: November 2022

Abstract
This study aims to determine the effect of N fertilizer on the amount of chlorophyll and quality of tomato fruit (Lycopersicon esculetum), carried out in the Kemantren Village, Tulangan District, Sidoarjo Regency, from July until September 2020. The experiment was arranged in a single factor using a randomized block design. This factor is the dose of N fertilizer with 5 treatments, namely control, 70 kg / ha, 80 kg / ha, 90 kg / ha, 100 kg/ha and repeated 4 times so that 20 experimental units are obtained. The research data will be tested with analysis of variance, and if real or very real results are obtained, it will be followed by the 5% BNJ test. The results showed that the dosage treatment of N fertilizer was not able to provide real results for all observation variables which included total chlorophyll (mg / l), vitamin C content (%), fruit weight (g), fruit volume (ml), fruit hardness (Pa), and the number of fruits per plant.
The Effect of POC Consetration and Planting Media on the Growth and Production of Pakcoy Aawi Plants (Brassica Rapa L).
Authors: Puspita Cindy Eka , Prihatiningrum Andriani Eka , Arifin Saiful 
Published: November 2022

Abstract
This research was conducted in the village of jiken Tulangan sidoarjo. Aims to determine the effect of POC dosage and growing media on the growth and yield of pakcoy mustard. As wel as to determine the correct dosage of POC and planting media for the growth of pakcoy and mustard in order to obtain the highest yield. The experiment was arraged in a factorial design used was a rendomized block design (RBN) with the first factors P1, P2, P3 and the second factor M1, M2 which ware repeated 4 time, in order to obtain 24 experimental units. The variabels observed ware plant height, number of leaves, dtem diameters, leaf area, wet weight, and antioxidants. Were analysed using ANOVA 5% to determine the differences between treatments. The results showed that admistration of POC dosage and the planting medium had in teraction on the variable leaf area at the age of 40 days after which the highest average was 26,63 treatment of soil and compost growing media with POC 15ml/liter (M1P1) compared to other treatments and the lowest average was 23,50 treatments of soil planting media, compost, cow manure with a POC dosage of 20ml/liter (M2P2). And there was no interaction on the observation variables of plant height, number of leaves, stem diameter, and wet weight. A good antioxidant test occurs in the treatment of soil and compost growing media with a POC dosage of 25ml/liter (M1P3) with value of 124,226 which is classified as moderate antioxidant because the IC50 value is between 100-150 μg/ml.
Ethanol Extract of Lemongrass Leaves (Cymbopogon nardus (L.) Rendle) as an Inhibitor to Enhancement of Cholesterol Levels in Wistar Rats
Authors: Dewi Puspa Sari , Rachmawan R Lucky , Prasayundari Feby Sabila , Choirunnisa Anna 
Published: November 2022

Abstract
Cholesterol is a type of lipid found in the body that aids in the digestion of food and is required for the formation of hormones. Even yet, increased levels in the blood can raise the risk of coronary heart attacks. Medicinal plants, in addition to pharmacological therapy, can be used to prevent levels from rising. Lemongrass (Cymbopogon nardus (L.) Rendle) is one of these herbs. The goal of this study was to see if an ethanol extract of lemongrass leaves could lower cholesterol levels in wistar rats. Maceration was used to extract the ethanol from lemongrass leaves. In pharmacological testing, 25 rats were separated into five groups: the control group, the comparison group for simvastatin 0.9 mg/kg bw, the test group at 13 mg/kg bw, 26 mg/kg bw, and 52 mg/kg bw, and the test group at 13 mg/kg bw, 26 mg/kg bw, and 52 mg/kg bw. Cholesterol 1g/kg bw and PTU 100 mg/kg bw were employed as inductors and were supplied for 14 days with the test preparation. The levels of cholesterol in the blood were tested. The results demonstrated that the ethanolic extract of lemongrass leaves could considerably reduce cholesterol levels (p<0.005) when compared to the control group. The ethanol extract dose of 52 mg/kg bw had the greatest inhibitory effect on cholesterol levels, implying that the ethanol extract of lemongrass leaves had anticholesterol potential.
Phytochemical Content and Antioxidant Activity of Forest Honje Leaf (Etlingera Hemisphaerica (Blume) R.M. Sm)
Authors: Riyanti Soraya , Sri Windyaswari Ari , Kahfi Syam Akhirul , Karlina Yenni , Anjelista Dinar , Faramayuda Fahrauk , Aulia Nanda , Ratnawati Julia 
Published: November 2022

Abstract
The forest honje (Etlingera hemisphaerica (Blume) R.M.Sm) belongs to the Zingiberaceae family, and its leaves are green on top and red on the bottom. The goal of this research was to investigate the phytochemical content of forest honje leaves' crude medicine, the antioxidant activity of various extracts using the DPPH method, and the levels of flavonoids and polyphenols in forest honje leaves using AlCl3 and the Folin Ciocalteu reagent. Extraction utilizing a reflux graded technique with n-hexane, ethyl acetate, and ethanol as subsequent solvents. The antioxidant activity of each extract was determined using the reagent 2,2'-diphenyl-1-picrylhydrazyl (DPPH). Flavonoids, polyphenols, tannins, quinones, monoterpenes-sesquiterpenoids, and steroids/triterpenoids were found in the phytochemical screening of forest honje leaf crude medicine. The antioxidant activity of n-hexane, ethyl acetate, and ethanol extracts was measured in IC50 values of 637.92 ± 0.2 μg/mL, 80.55 ± 0.2 μg/mL, and 49.37 ± 0.5 μg/mL, respectively, while quercetin had an IC50 value of 7.47 ± 0.2 μg/mL. Forest honje leaves crude drug had a flavonoid content of 67.85 ± 0.5 mg QE/g crude drug and a polyphenol content of 96.0 3± 0.6 GAE/g crude drug.
Antihyperuricemia Effect of Piper crocatum Ruiz & Pav Leave Ethanol Extract in Male Wistar Rats
Authors: Wahyuningsih Sri , Noviana Resi Nadia , Sholihah Puspa Sari Dewi , Vikasari Suci Nar 
Published: November 2022

Abstract
Hyperuricemia is characterized by an increase in blood uric acid levels above normal. One of the traditional plants used to reduce uric acid levels is red betel leaf (Piper crocatum Ruiz & Pav). This study aimed to examine the uricostatic effect of the ethanolic extract of red betel leaf on male Wistar rats. The animals were divided into 6 groups, namely the normal, control, Allopurinol 9 mg/kg BW, extract dose 11.5, 23 and 46 mg/kg BW. Induction was done by giving a diet high in purines (chicken liver juice) for three days and potassium oxonate 250 mg/kg bw on the 4th day one hour before giving the test preparations in all groups except normal. Measurement of uric acid levels was carried out at 0, 60, 90, and 120 minutes after potassium oxonate induction. The test results showed that the extract at all doses had a uricostatic effect with the best effect being 46 mg/kg BW compared to the control P<0.05) but the effect was not better than allopurinol
Antiinflammation and Antioxidant Effect of Ethanolic Extract of Ageratum conyzoides Leaves
Authors: Vikasari Suci Nar , Sukandar Elin Yulinah , Suciati Tri , Adnyana I Ketut 
Published: November 2022

Abstract
Traditionally, Ageratum conyzoides is used to treat several inflammatory diseases, such as rheumatism and as wounds healing. This study aimed to evaluate the anti-inflammatory and antioxidant effects of 50% ethanol extract of A.conyzoides leaves. Anti-inflammatory assay was carried out in vivo using the 1% carrageenan induction method. The animals were divided into 5 groups, control, diclofenac sodium, extract at doses of 22.5, 45 and 90 mg/kg BW. Antioxidant activity was assayed by the DPPH method. The results showed that the extract at all doses gave an anti-inflammatory effect compared to the control (p<0.05), where the best results were given by extract doses of 45 and 90 mg/kg BW and equivalent to the comparison of diclofenac sodium (p>0.05). The results of the DPPH showed that the IC50 of the extract was 153.63 μg/ml and the antioxidant activity index value was 0.52 with moderate antioxidant activity. It is expected that antioxidant activity may play a role with anti-inflammatory effect of A.conyzoides ethanol extract.
Study In-Silico Oleanane Triterpenoids in Aquilaria spp. as a Covid-19 Antiviral
Authors: Anugrah R. , Mumtaz R.K. , Suryasaputra D. 
Published: November 2022

AbstractCovid-19, a disease characterized by Severe Acute Respiratory Syndrome, is caused by Coronavirus-2 (SARS-CoV-2). This virus causes tissue damage and a decrease in the respiratory system. Agarwood (Aquilaria spp) is a plant that has various pharmacological activities, including relieving respiratory diseases. One of the several secondary metabolites reported in Aquilaria spp. is oleanane triterpenoids, suspected of having antiviral activity. This research was aimed to determine the potential of oleanane triterpenoids from Agarwood as a covid-19 antiviral by in silico study. The research methods were molecular docking, prediction of Lipinski rules of five, and prediction of ADME. As a receptor, main protease (Mpro) Covid-19 was used. The four oleanane triterpenoid compounds in Agarwood demonstrated a higher affinity for the main protease covid-19 (ΔG 11-oxo-β-amyrin = -9.8 kcal/mol, ΔG hederagenin-an = -9.6 kcal/mol, ΔG 3β-acetoxyfriedelane = -9.4 kcal/mol, ΔG ursolic acid = -9.5 kcal/mol) than Lopinavir (ΔG = -6.2 kcal/mol) and Remdesivir (ΔG = -7.2 kcal/mol). The major amino acids involved in ligand and receptor interactions are methionine 49 and 165, proline 168, glutamine 189, arginine 188, and threonine 25. According to the prediction of Lipinski's rule of five and ADME, hederageninan is potential for development as oral medicine.
Diversification of Sea Cucumber (Holothuria Scabra) Through Pempek Sensoric Test
Authors: Ohoiwutun Maria Kristina , Rahantoknam Santi Penina Tua , Beruatjaan Mariana Yermina , Rahantoknam Meyske Angel 
Published: November 2022

Abstract
A person's level of preference for a food product is largely determined by the raw materials and processing methods. One of the food products with high economic value and potential nutritional value is the sea cucumber Holothuria scabra. H. scabra has potential nutritional value to be developed as a [1] healthy food. So far, sea cucumber products are only processed in dry form. This study aims to study the process of processing pempek made from fresh sea cucumbers (wet) and determine the level of preference of the panelists through a sensory test of pempek made from fresh sea cucumbers. Holothuria scabra used is H. scabra. This research method is an experimental method using Independent Samples T Test analysis. Sensory testing was carried out using a hedonic scale [2] using 30 untrained panelists. Assessment parameters include: appearance, smell, taste, and texture. The rating scale used is 9 = like very much, 8 = like very much, 7 = like, 6 = like somewhat, and 5 are neutral. The results showed that the sea cucumber pempek was highly favored by the panelists. The level of preference for the appearance of pempek sea cucumbers at the Watuar location was 8.3% and the Tutrean location was 8.27%; the smell of sea cucumber pempek at Watuar and Tutrean locations 8%; the taste of sea cucumber pempek at the Watuar location was 8.3% and the Tutrean location was 8.2%; and the texture of the sea cucumber pempek at the Watuar location 8.03% and the Tutrean location 8.17%.
Fuel Parameter Analysis from Kerosene Blended with Biodiesel and Diesel Fuel
Authors: Jati J F , Bhikuning A 
Published: November 2022

Abstract
Biodiesel is one of the potential materials that can be used to substitute for diesel fuel. The raw material is made from vegetable oil that can be renewed, produced periodically, and is easily obtained. The analysis was carried out by using kerosene blended to diesel and biodiesel. Kerosene is a colourless and flammable hydrocarbon liquid, and it was used as fuel oil. The purpose of this research is to analyse the parameters from Kerosene Blended with Biodiesel and Diesel Fuel. The materials are from Biodiesel and Diesel Fuel blended with kerosene with different percentages 80, 85, 90 and 95. The method was used by ASTM D445-19a, ASTM D1298-12b, ASTM D4737-10, and ASTM D86-17. The results of the analysis uses 5% to 95% volume, show that the A95-BS model mixture of biodiesel and diesel is poor, besides that A80-BS and A85-BS with a value of 375, in each viscosity 2.456 cSt kg/m, the performance is excellent for two mixtures, and A80-S model with a value of 357 with viscosity 2,378 cSt kg/m is excellent performance for one type of mixture.
A new airfoil based on banana leaf midrib morphology for horizontal axis wind turbine
Authors: Rosa F , Soetikno P , Suweca I W , Moelyadi M A 
Published: November 2022

Abstract
The airfoil profile of this study is based on plant morphology, which is rarely modeled in airfoil profiling. Designing, modeling, and analyzing the aerodynamics of one of the projected morphological parts of the banana leaf midrib that forms a 45-degree angle with the longitudinal axis as a distinct new airfoil. The profile of the LM-45 airfoil has a thickness of 16.28%, a chord length of 1500mm, a Reynolds number between 3E5 and 7E5, and a wind speed between 3 and 7 meters per second. An aerodynamic analysis using QBLADE and ANSYS FLUENT determined the glide ratio and pressure distribution across the airfoil surface. LM-45 has a maximum glide ratio of 123.07 at an angle of attack of 2 degrees and a Reynolds number of 7E5, and a minimum glide ratio of 70.02 at an angle of attack of 4 degrees and a Reynolds number of 3E5. As indicated by the glide ratio, the banana leaf midrib profile can be applied to the airfoil profile for wind speeds between 3 and 7 m/s at an attack angle between 2 and 4 degrees.
The compliance of water conservation aspects of clean water, wastewater, and rainwater management for residential buildings to support the green building concept
Authors: Ayuningtyas U , Susanto D A , Buwana E , Emelia T 
Published: November 2022

Abstract
Water conservation is one aspect of the green building concept. Water conservation includes using a water meter to determine the amount of usage, calculating water use, reducing water use, using plumbing tools/features that can save water use, water recycling processes, alternative water sources, water reservoirs, and efficient use of water. The purpose of this study was to evaluate water conservation aspects in housing in accordance with the provisions of Greenship Homes version 1.0. This study uses a quantitative descriptive method by comparing housing water conservation conditions with Greenship criteria. Based on the results of the study, the evaluation results of the suitability of water conservation aspects in the Perumnas are 52% in total. In each of the criteria for water-saving fixtures, rainwater harvesting criteria, water-saving irrigation criteria, and wastewater management the value is below 50%. It is necessary to make improvements or make some efforts to be able to save and manage water wisely and effectively. These efforts include using a shower in every house, making a simple technology for harvesting rainwater, and installing a grease trap. With these efforts, the suitability evaluation of water conservation aspects in supporting the green building concept in house buildings can be achieved.