Evaluation of hybrid electric road train (HERT) as an alternative mode of transportation in metro Manila

EDSA has been one of the busiest roads in the Philippines and essential component of the spatial structure of the Metro Manila. The decent growth of the areas around the avenue adds a great volume of traffic which cause traffic congestion and at the same time pollution. HERT is a 40 meter long vehicle, powered by an eco-friendly electric generator batteries with a totality of 240 passenger capacity. The purpose of the research is to define components and features of HERT and determine the willingness to pay of commuter’s through their own preferences. The results show that most of the commuters in Metro Manila, even with a minimum wage are willing to pay and patronize the system in spite of, the fare price being greater or equal amount of MRT-3’s fare price. HERT components and features diminished about half of the pollutant released by regular buses. Thus, HERT has the potential to serve as an alternative mode of mass transportation system not only in Metro Manila but to other major and minor roads in the Philippines.Keywords: Electric Road Train, Mass Transportation, Willingness to pay, Eco-friendl

Perbandingan Teknik Pemajangan Sayuran Daun Untuk Mempertahankan Kesegaran Selama Penjualan

This study aimedto observe the effect of soakingthe root of leafy vegetableson thefreshnessduringsale. Vegetablesused werekangkungandgreen mustardfrom hydroponicsandconventionalcultivations. Treatments wereconsistedofsoakingwithaeratedwater, soakingwithunaeratedwater, soaking withaerated nutrient solution(EC 0.4mS/cm), displaying in mist sprayed (humidified) cabinet without soaking,andcontrol(neither soaking nor spraying). Soakingwas donein aglasscontainer(50cm length, 40cm width, 20cm height)andfilledwithwater±20liters/5 cm height. Parametersmeasured werewater content, leaf water potential,andleafdiscoloration. The results showedthatthe average room temperature and RH were found about 29oC and 80%. Respectively temperature and RH in the humidified cabinet were not much different from the ambiance. Soakingwithaeration was able to keep vegetables fresh without wilting process. Percentage of yellowing reached 10% of the total number within 5days for hydroponics kangkung, 2 days for conventional kangkung, 4days for hydroponics green mustard, and 2 days for conventional green mustard during the display. Vegetables displayed in the room with no treatment (control) were wilting consistently, their water content was decreasing, and their water potential tended to increase from the beginning. Thus, discoloration was more proper parameter for the soaked vegetables, while change of water content and water potential were more proper for non soaked or spayed vegetables

Analisis Difusi Larutan Pupuk Melalui Dinding Mortar Arang Sekam Padi

The aim of this reasearch is to determine difussion coefficient of nutrient solution through rice husk charcoalmortar walls. This research used completely randomized design (CR) with factorial arrngement which consistedof factors. The first factor, the material composition ratios of mortars (cement : sand : rice husk charcoal),consisted of two levels: P 1 (1:3:3) and P 2 (1:3:4). The second factor, the concentration of nutrient consisted ofree levels, namely K 1 (3 mS/cm), K 2 (6 mS/cm), and K 3 (9 mS/cm). Data set was analyzed by using ANOVA,then followed by using LSD at 5% significant level. Anova showed that there was interaction between mortarmaterial composition and nutrient concentration. The best diffusion coefficient was found in the treatment P 2 K 1and P 2 K 2 (1:3:4 and the nutrient concentrations 3 mS/cm, 6 mS/cm). Nutrient solution in the treatments couldpass through the walls of mortar very well, so that it could be used as a means of fertigation

Pengaruh Lama Aerasi Terhadap Pertumbuhan Dan Hasil Tanaman Sawi (Brassica Juncea L.) Pada Hidroponik Dft (Deep Flow Technique)

This study aims to determine the effect of duration of aeration on the growth and yield of mustard plants (Brassica juncea L.), nutrient solution and electricity consumptions. The experiment was conducted in September and October 2013 at The Integrated Field Laboratory, and Land and Water Resources Engineering Laboratory, The Departement of Agricultural Engineering, The University of Lampung. The experiment consisted of four treatments of aeration intervals including N24M0 (control), N15M30 (15 minute on-30 minute off), N15M60 (15 minute on- 60 minute off) and N15M90 (15 minute on- 90 minute off). Each treatment was divided into 3 segments along the gutter, including R1 (segment near the aerator), R2 (middle segment chamfer) and R3 (section away from the aerator). The results showed that the use of a nutrient solution circulating pump with a flow rate of 0.27 cm/s is sufficient for EC, DO, pH fairly uniform along the gutter. Aeration with interval 15 minute on- 60 minute off turned out to produce the highest mustard crop (2,146 kg) with the lowest consumption of fertilizer and electricity by IDR 1753.00/kg

Pengaruh Daya Lampu Neon Terhadap Pertumbuhan Tanaman Pak Choi (Brassica Rapa L.) Pada Sistem Hidroponik Indoor

The purpose of this research was to observe the influence of neon lamp power (watt) on the growth of Pak Choiin an indoor hydroponic system. This research was done by implementing several pots of Pak Choi planting undersome different treatments of lighting. The treatment consisted of neon lamp 20 watt (N1), neon 2 x 20 watt (N2),neon 40 watt (N3), neon 2 x 40 watt (N4) in a growth chamber and one treatment under the sun lighting (N0).The result of the research showed that the treatment of 2 x 40 watt neon lamp (N4) turned out to have the bestresult at all variables measured. Then, it was followed by treatment of neon 40 watt (N3) and the lowest result wasin neon 20 watt (N1). The highest biomass harvested was 35 g in N4, followed by 18 g in N3, then the 15 g in N2and 4 g in N1. However, the highest ash content was in the treatment of 20 watt neon lamp (N1), and followed byN2 (neon 2 x 20 watt). Although, Pak Choi grown under the sun ray has the highest biomass harvested, but it hadthe lowest mineral content

Testing Organonitrofos Fertilizer of Plant Responses Rampai Tomato (Lycopersicon Pimpinellifolium) in Pot(pot Experiment

Rampai tomato (Lycopersicon pimpinellifolium) is one important vegetable in Indonesia. The production of rampai tomato increases every year, indicating a good opportunity for the tomato in market. In the process of cultivation, fertilization is a very important aspect. Advances in technology have invented some importantagricultural inputsespecially for chemical fertilizers such as Urea, TSP, KCl, NPK, and others. Nowadays, small scaled farmers frequently face difficulty to get chemical fertilizers on market because ofeither scarcity or high price. This condition needs to be well anticipated. Reducing the use of chemical fertilizers by using organic fertilizers which isproduced from local and cheap natural resources is a somewhat promising solution.The organic fertilizer tested in this study is an alternative fertilizer called Organonitrofos. Organonitrofos fertilizer is made from 70-80% cow dung and 20-30% phosphate rock, in the previous research. Both the materials are locally available in Lampung. This fertilizer then needs to be tested to ensureits consistency on plant production. In this study, Organonitrofosfertilizerwas testedon rampai tomato plantsin pots (pot experiment).The study aimed (1) to test the Organonitrofos fertilizer on the response of rampai tomato plants in pots (2)reduce the useof chemicalfertilizersin the production oframpai tomatoplants.The pot experiment was conducted in the Integrated Field Laboratory of the Faculty of Agriculture University of Lampung on January - April 2012. The experiment used Completely Randomized Design (CR) with 7 treatment (7 combinations between chemical fertilizer and Organonitrofos), 4 replicates each. Data collected was analyzed by using ANOVA and followed by LSD. The variables observed were agronomic aspects (such as plant height, biomass, and production) and water consumption. The results showedthat,based on theplant responsevariablessuch asplant height, upper and biomasses, andcrop production, treatmentC(100% Organonitrofos with 5000 kg/ha dose) was significantly different and better from every other treatment. Based on the water consumption (evaporationand irrigation), all the treatments were not significantly different. However, the research showed that the use of 100% Organonitrofos fertilizer (5000 kg/ha); resulted in the highest water productivity (yield/water consumption). This research also showed that the use of chemical fertilizersbe could significantly reduced by using combination between chemical fertilizers and Organonitrofos

Deep generative modeling for single-cell transcriptomics.

Single-cell transcriptome measurements can reveal unexplored biological diversity, but they suffer from technical noise and bias that must be modeled to account for the resulting uncertainty in downstream analyses. Here we introduce single-cell variational inference (scVI), a ready-to-use scalable framework for the probabilistic representation and analysis of gene expression in single cells ( https://github.com/YosefLab/scVI ). scVI uses stochastic optimization and deep neural networks to aggregate information across similar cells and genes and to approximate the distributions that underlie observed expression values, while accounting for batch effects and limited sensitivity. We used scVI for a range of fundamental analysis tasks including batch correction, visualization, clustering, and differential expression, and achieved high accuracy for each task

Anisotropy and chemical composition of ultra-high energy cosmic rays using arrival directions measured by the Pierre Auger Observatory

The Pierre Auger Collaboration has reported evidence for anisotropy in the distribution of arrival directions of the cosmic rays with energies $E>E_{th}=5.5\times 10^{19}$ eV. These show a correlation with the distribution of nearby extragalactic objects, including an apparent excess around the direction of Centaurus A. If the particles responsible for these excesses at $E>E_{th}$ are heavy nuclei with charge $Z$, the proton component of the sources should lead to excesses in the same regions at energies $E/Z$. We here report the lack of anisotropies in these directions at energies above $E_{th}/Z$ (for illustrative values of $Z=6,\ 13,\ 26$). If the anisotropies above $E_{th}$ are due to nuclei with charge $Z$, and under reasonable assumptions about the acceleration process, these observations imply stringent constraints on the allowed proton fraction at the lower energies