Mechanical And Thermal Properties Of Hydroxyapatite Filled Poly(Methyl Methacrylate) Composites.

Poly(methyl methacrylate) (PMMA) filled with hydroxyapatite (HA) filler has been widely used in biomaterial application. Acrylic denture base material was prepared from PMMA filled with HA

PERBEDAAN PENGARUH METODE LATIHAN UP HILL SPRINT DAN DOWN HILL SPRINT TERHADAP PENINGKATAN PRESTASI LARI 100 METER DITINJAU DARI RASIO PANJANG TUNGKAI DAN TINGGI BADAN (Studi Eksperimen pada siswa putra ekstrakurikuler SMP N 1 Cepu)

Tujuan penelitian ini adalah untuk mengetahui (1) Perbedaan pengaruh antara metode Up hill sprint dan down hill sprint terhadap peningkatan prestasi lari sprint 100 meter.(2). Perbedaan peningkatan prestosi lari sprint 100 meter antara siswa yang memiliki rasio panjang tungkai dan tinggi badan tinggi, dengan siswa yang memililiki panjang tungkai dan tinggi badan yang rendah. (3). Pengaruh interaksi antara metode latihan dan rasio panjang tungkai dan tinggi badan terhadap peningkatan prestasi laris print 100 meter. Metode yang digunakan dalam penelitian ini adalah metode eksperimen dengan rancangan faktorial 2 x 2.dengan subyek penelitian siswa putra ekstrakurikuler SMP N 1 Cepu. Seluruh data yang diperlukan dalam penelitian ini seperti yang tersebut di atas, diperoleh melalui tes dan pengukuran terhadap panjang tungkai dan tinggi badan dengan menggunakan stadiometer Hasil dari penelitian ini adalah : (1) Ada perbedaan pengaruh yang signifikan antara latihan lari UP Hill Sprint dan latihan lari Down Hill Sprint dalam meningkatkan hasil lari 100 meter, dengan rata-rata peningkatan kecepatan masing-masing yaitu 0,703 dan 0,831. (2) Ada perbedaan hasil latihan lari 100 meter yang signifikan antara siswa yang memiliki rasio panjang tungkai : tinggi badan tinggi dan rendah. Peningkatan hasil latihan prestasi lari 100 meter pada siswa yang memiliki rasio panjang tungkai : tinggi badan kategori tinggi lebih baik dari pada siswa yang memiliki rasio panjang tungkai : tinggi badan kategori rendah, dengan rata-rata peningkatan masing-masing yaitu 0,857 dan 0,677. (3) Tidak terdapat pengaruh interaksi yang signifikan antara metode latihan lari 100 meter dan rasio panjang tungkai : tinggi badan terhadap hasil latihan prestasi lari 100 meter, berdasarkan hasil perhitungan yang telah dilakukan Fh= 0,385>Ft=1,74 (4) siswa yang memiliki panjang tungkai dan tinggi badan yang tinggi lebih cocok jika diberikan metode latihan Down Hill Sprint. (5) siswa yang memiliki panjang tungkai dan tinggi badan rendah lebih cocok jika diberikan metode latihan Up Hill Sprint. Kata Kunci : Sprint 100 Meter, latihan Up Hill Sprint, Down Hill Sprin

Nutritional composition and antioxidant properties of Canarium odontophyllum Miq. (dabai) fruits.

The present study sought to determine the nutritional composition and antioxidant properties of Canarium odontophyllum Miq. (dabai) fruits from different districts in Malaysia, namely Kanowit, Sarikei, Kapit and Song in Sarawak. Two varieties of the fruits were investigated. Lipid (21.16 ± 4.71 to 25.76 ± 3.03 g/100 g FW) was the major macronutrient in dabai fruits, while the predominant minerals were calcium, sodium and potassium. The fruit protein was rich in aspartic and glutamic acids which accounted for 45–49% of total amino acids. Purple dabai fruits from Kapit were found to contain the highest total phenolic levels, flavonoids and anthocyanin contents (p < 0.01) and to exhibit the most significant antioxidant activities (p < 0.01), using trolox equivalent antioxidant capacity (TEAC) and ferric reducing ability (FRAP) assays. Antioxidant activities were highly correlated with total phenolic and flavonoid contents of dabai fruits

Determination and optimization of flavonoid and extract yield from brown mango using response surface methodology.

The optimum extraction conditions to obtain the highest flavonoid content and extract yield from Mangifera pajang pericarp (MPP) were analyzed using response surface methodology (RSM). A full factorial central composite design was used to investigate the effects of ethanol concentration (20-80%), temperature (30-65°C) and liquid to solid ratio (20-50 mL/g) on the recovery of extract yield and flavonoids. A second order polynomial model produced a satisfactory fitting of the experimental data with regard to extract yield (R 2 = 0.9890, p < 0.0001) and flavonoids (R 2 = 0.9652, p < 0.0001). The optimum conditions to obtain higher extract yield, were 54%, 50°C, and 42.4 mL/g, while for flavonoids were 68%, 57°C, and 20.2 mL/g, respectively. The experimental values agreed with those predicted with 99% and 96% confidence interval for extract yield and flavonoids respectively. This indicates the suitability of RSM in optimizing the extraction of flavonoids and extract yield from MPP

Unmanned aerial vehicle (UAV) derived structure-from-motion photogrammetry point clouds for oil palm (Elaeis guineensis) canopy segmentation and height estimation

This is the author accepted manuscript. The final version is available from Taylor & Francis via the DOI in this record.The vast size of oil palm (Elaeis guineensis) plantations has led to lightweight unmanned aerial vehicles (UAVs) being identified as cost effective tools to generate inventories for improved plantation management, with proximal aerial data capable of resolving single palm canopies at potentially, centimetric resolution. If acquired with sufficient overlap, aerial data from UAVs can be processed within structure-from-motion (SfM) photogrammetry workflows to yield volumetric point cloud representations of the scene. Point cloud-derived structural information on individual palms can benefit not only plantation management but is also of great environmental research interest, given the potential to deliver spatially contiguous quantifications of aboveground biomass, from which carbon can be accounted. Using lightweight UAVs we captured data over plantation plots of varying ages (2, 7 and 10 years) at peat soil sites in Sarawak, Malaysia, and we explored the impact of changing spatial resolution and image overlap on spatially variable uncertainties in SfM derived point clouds for the ten year old plot. Point cloud precisions were found to be in the decimetre range (mean of 26.7 31 cm) for a 10 year old plantation plot surveyed at 100 m flight altitude and >75% image overlap. Derived canopy height models were used and evaluated for automated palm identification using local height maxima. Metrics such as maximum canopy height and stem height, derived from segmented single palm point clouds were tested relative to ground validation data. Local maximum identification performed best for palms which were taller than surrounding undergrowth but whose fronds did not overlap significantly (98.2% mapping accuracy for 7 year old plot of 776 palms). Stem heights could be predicted from point cloud derived metrics with root-mean-square errors (RMSEs) of 0.27 m (R2= 0.63) for 7 year old and 0.45 m (R2=0.69) for 10 year old palms. It was also found that an acquisition designed to yield the minimal required overlap between images (60%) performed almost as well as higher overlap acquisitions (>75%) for palm identification and basic height metrics which is promising for operational implementations seeking to maximise spatial coverage and minimise processing costs. We conclude that UAV-based SfM can provide reliable data not only for oil palm inventory generation but allows the retrieval of basic structural parameters which may enable per-palm above-ground biomass estimations.European CommissionMarie Skłodowska-Curi

Assessment of Some Old Earth Dams in Malaysia Through Observation and Computer Simulation

In this study, two earth dams located in Malaysia were studied. The Labong Dam is a non-homogenous earth dam, whilst the Bukit Merah Dam is a homogenous earth dam. The performances of both dams against seepage were studied through the analyses of both observed and simulated phreatic surfaces. Simulations of seepage rate and phreatic surfaces through the dam were conducted by using SEEP/W model. The study showed that the SEEP/W model was able to predict (simulate) both the seepage rates and phreatic surfaces of the homogeneous and non-homogeneous earth dams with a reasonable accuracy. The Absolute Error (AE) between the predicted and observed seepage rates of both dams were found to be 0.03 m3/min to 0.18 m3/min. The average AE in the predicted phreatic surfaces for the maximum and minimum water levels in the reservoir were 0.6 m and 0.38 m for the non-homogeneous dam (Labong Dam), and 0.595 m and 0.75 m for the homogeneous dam (Bukit Merah Dam)

An Upgraded Transverse Electromagnetic Parallel Plates for Dielectric Measurement

A new version of transverse electromagnetic parallel plates with irregular plates’ width and plate separation has been developed for dielectric measurement. The separations between the plates are supported by four rectangular Teflon block and 1 mm of groove is proposed at the center of the upper plate to maintain the measurement repeatability. The groove enables the samples which are slightly higher than 2 cm to be fitted well between the plates without introducing extra force to the plates. Theperformance of both parallel plates has been compared in the frequency range from 100 MHz to 1.1 GHz. It is found that the upgraded parallel plate offers better return loss and insertion loss above 500 MHz compared to the previous parallel plate. It is reported from this work that the return loss of the parallel plate must be lower than -15 dB in order to achieve accurate dielectric constant. However, the insertion loss of the parallel plates does not influence the real permeability significantly. The upgraded TEM parallel plateproduces a consistent reading with a standard deviation of less than 0.05 above frequency 200 MHz. The dielectric measurement of Polypropylene (PP) has proven the capability of this upgraded TEM parallelplate

Artificial Intelligence-Based Classification of Multipath Types for Vehicular Localization in Dense Environments

Multipath-geometry is the most promising approach for vehicular localization in line of sight (LOS) and non-line of sight (NLOS) scenarios. In such approach, identifying the type of the propagated multipath (MP) is an important pre-required process. However, identifying the type of the MP in dense multipath environments is challenging. The previous works proposed iterative methods for this task. The iterative methods have their limitations such as required more in-depth analysis and high complexity of computation. However, leveraging artificial intelligence advantages, a lower complexity identification method is proposed in this work. We utilized supervised learning algorithms to distinguish the direct link, first-order, and higher-order MPs of millimeter-Wave Vehicle-to-Infrastructure communication. In particular, four models namely KNN, and SVM, MLP, and LSTM have been applied. The characteristics of the received signal paths including received signal strength and elevation and azimuth angle of arrival are considered as features of the training dataset. The results showed that the accuracy rates of the classification are ranged between 96.70% and 84.0%. The best accuracy rate was 96.70% obtained by LSTM, followed by 94.47 % obtained by MLP. Whereas, 93.67% and 84.0% accuracy rats were achieved by KNN and SVM respectively

Antioxidant Capacities of Peel, Pulp, and Seed Fractions of Canarium odontophyllum Miq. Fruit

Antioxidant capacities of ethylacetate, butanol, and water fractions of peel, pulp, and seeds of Canarium odontophyllum Miq. (CO) were determined using various in vitro antioxidant models. Ethylacetate fraction of peel (EAFPE) exhibited the highest total phenolic (TPC), total flavonoid content (TFC), and antioxidant activities compared to pulp, seeds, and other solvent fractions. Antioxidant capacities were assayed by total antioxidant capability, 1,1-diphenyl-2-picryl hydrazyl (DPPH) radical activity, ferric reducing antioxidant power (FRAP), and hemoglobin oxidation assay. Total phenolic content of ethylacetate fractions was positively correlated with the antioxidant activity. This is the first report on the antioxidant activities from CO fruit fractions. Thus, EAFPE can be used potentially as a readily accessible source of natural antioxidants and as a possible pharmaceutical supplement

Performance Measurement of Zakat Utilization: The Effectiveness of Zakat Distribution

In this study, we will examine the performance of zakat. The background of the research is the zakat utilization program as one of the programs in the zakat intermediation role, performance must be assessed to see the sustainability of the program. One of them is the effectiveness of the zakat distribution program. The research method used is a case study of zakat programs (BAZNAS) in West Java area, with a descriptive analysis approach. Data collection techniques used were observation, in-depth interviews and documentation. The results of this study are expected to be an innovation that becomes a reference for zakat institution managers to assess the performance of zakat utilization by looking at the effectiveness of the zakat distribution program. Zakat distribution program at BAZNAS of West Java focuses on the economy, health, and education. BAZNAS of West Java is distributed for da’wah and the victims of natural disasters. Zakat utilization at BAZNAS of West Java covers the fields of economy, health, and education. In carrying out the role as a zakat distributor, BAZNAS of West Java still encounters obstacles that hinder the effectiveness of the zakat distribution program. Many measurements are used to assess the effectiveness of its role in zakat distribution, including the implementation of standard operating procedures (SOP). Keywords: effectiveness, zakat utilization, zaka