Relationship between liquidity index and stabilized strength of local subgrade materials in a tropical area

Measurement ◽  
2014 ◽  
Vol 55 ◽  
pp. 231-237 ◽  
Author(s):  
Ahmad Safuan A. Rashid ◽  
Roohollah Kalatehjari ◽  
Norhazilan Md Noor ◽  
Haryati Yaacob ◽  
Hossein Moayedi ◽  
...  
Keyword(s):  
Tropical Area ◽  
Liquidity Index

scholarly journals Recapitulation of the Function and Role of ROS Generated in Response to Heat Stress in Plants

Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 371
Author(s):  
Emily Medina ◽  
Su-Hwa Kim ◽  
Miriam Yun ◽  
Won-Gyu Choi
Keyword(s):  
Heat Stress ◽  
Plant Growth ◽  
Intracellular Signaling ◽  
Oxygen Species ◽  
Natural Ecosystems ◽  
Signaling Molecule ◽  
Signaling Systems ◽  
Cell Compartments ◽  
Tropical Area

In natural ecosystems, plants are constantly exposed to changes in their surroundings as they grow, caused by a lifestyle that requires them to live where their seeds fall. Thus, plants strive to adapt and respond to changes in their exposed environment that change every moment. Heat stress that naturally occurs when plants grow in the summer or a tropical area adversely affects plants’ growth and poses a risk to plant development. When plants are subjected to heat stress, they recognize heat stress and respond using highly complex intracellular signaling systems such as reactive oxygen species (ROS). ROS was previously considered a byproduct that impairs plant growth. However, in recent studies, ROS gained attention for its function as a signaling molecule when plants respond to environmental stresses such as heat stress. In particular, ROS, produced in response to heat stress in various plant cell compartments such as mitochondria and chloroplasts, plays a crucial role as a signaling molecule that promotes plant growth and triggers subsequent downstream reactions. Therefore, this review aims to address the latest research trends and understandings, focusing on the function and role of ROS in responding and adapting plants to heat stress.

scholarly journals Viral and Atypical Bacterial Etiology of Acute Respiratory Infections in Children under 5 Years Old Living in a Rural Tropical Area of Madagascar

PLoS ONE ◽  
2012 ◽  
Vol 7 (8) ◽  
pp. e43666 ◽  
Author(s):  
Jonathan Hoffmann ◽  
Henintsoa Rabezanahary ◽  
Martin Randriamarotia ◽  
Arsène Ratsimbasoa ◽  
Josette Najjar ◽  
...  
Keyword(s):  
Respiratory Infections ◽  
Acute Respiratory Infections ◽  
Tropical Area ◽  
Children Under 5

A comparison of Nellore and Nellore-cross entire male cattle finished in a feedlot in a tropical area of Brazil with respect to carcass characteristics and meat quality after ageing either with or without 60days of prior frozen storage

2021 ◽  
Author(s):  
Júlia Dias do Nascimento ◽  
Marcus Vinicius Morais de Oliveira ◽  
Marina de Nadai Bonin ◽  
Pollyanna Ricartes de Oliveira de Oliveira ◽  
Luis Carlos Vinhas Ítavo ◽  
...  
Keyword(s):  
Meat Quality ◽  
Frozen Storage ◽  
Carcass Characteristics ◽  
Tropical Area ◽  
Entire Male

scholarly journals Urinary fluoride excretion in children exposed to fluoride toothpaste and to different water fluoride levels in a tropical area of Brazil

2008 ◽  
Vol 19 (3) ◽  
pp. 214-218 ◽  
Author(s):  
Franklin Delano Soares Forte ◽  
Suzely Adas Saliba Moimaz ◽  
Fábio Correia Sampaio
Keyword(s):  
Dental Fluorosis ◽  
Fluoride Concentration ◽  
Second Phase ◽  
Appropriate Use ◽  
Fluoride Toothpaste ◽  
Tropical Area ◽  
Significant Difference ◽  
Urinary Fluoride ◽  
The City ◽  
Water Fluoride

The aim of this study was to evaluate the urinary fluoride excretion of 2- to 7-year-old children exposed to different water fluoride concentrations in the city of Catolé do Rocha, PB, Brazil. Forty-two children were allocated to 3 groups according to the concentration of fluoride in the water: G1 (n=10; 0.5-1.0 ppm F), G2 (n=17; 1.1-1.5 ppm F) and G3 (n= 15; >1.51 ppm F). The study was carried out in two 1-week phases with 1-month interval between the moments of data collection: in the first phase, the children used a fluoride toothpaste (FT) (1,510 ppm F) for 1 week, whereas in the second phase a non-fluoride toothpaste (NFT) was used. The urine was collected in a 24-h period in each week-phase according to Marthaler's protocol. The urinary fluoride excretion data expressed as mean (SD) in µg/24 h were: G1-FT= 452.9 (290.2); G1-NFT= 435.1 (187.0); G2-FT= 451.4 (224.0); G2-NFT= 430.3 (352.5); G3-FT=592.3 (390.5); and G3-NFT=623.6 (408.7). There was no statistically significant difference between the water fluoride groups, and regardless of the week phase (ANOVA, p>0.05). The use of fluoride toothpaste (1,510 ppmF) did not promote an increase in urinary fluoride excretion. There was a trend, though not significant, as to the increase of urine fluoride concentration in relation to fluoride concentrations in the water. The excretion values suggest that some children are under risk to develop dental fluorosis and information about the appropriate use of fluoride is necessary in this area.

scholarly journals ACCELERATION OF TOPOGRAPHIC MAP PRODUCTION USING SEMI-AUTOMATIC DTM FROM DSM RADAR DATA

2016 ◽  
Vol XLI-B7 ◽  
pp. 47-54
Author(s):  
Aldino Rizaldy ◽  
Ratna Mayasari
Keyword(s):  
Conventional Method ◽  
Point Cloud ◽  
Radar Data ◽  
Stereo Image ◽  
Human Operator ◽  
Topographic Map ◽  
Tropical Area ◽  
Check Points ◽  
Map Scale ◽  
Government Institution

Badan Informasi Geospasial (BIG) is government institution in Indonesia which is responsible to provide Topographic Map at several map scale. For medium map scale, e.g. 1:25.000 or 1:50.000, DSM from Radar data is very good solution since Radar is able to penetrate cloud that usually covering tropical area in Indonesia. DSM Radar is produced using Radargrammetry and Interferrometry technique. The conventional method of DTM production is using “stereo-mate”, the stereo image created from DSM Radar and ORRI (Ortho Rectified Radar Image), and human operator will digitizing masspoint and breakline manually using digital stereoplotter workstation. This technique is accurate but very costly and time consuming, also needs large resource of human operator. Since DSMs are already generated, it is possible to filter DSM to DTM using several techniques. This paper will study the possibility of DSM to DTM filtering using technique that usually used in point cloud LIDAR filtering. Accuracy of this method will also be calculated using enough numbers of check points. If the accuracy meets the requirement, this method is very potential to accelerate the production of Topographic Map in Indonesia.

scholarly journals Retrieved Optical Thickness for Analyzing The Aerosol and Cloud Properties Using Lidar Remote Sensing

2012 ◽  
Vol 13 (1) ◽  
pp. 7
Author(s):  
Syamsir Dewang
Keyword(s):  
Remote Sensing ◽  
Optical Thickness ◽  
Reference Data ◽  
Single Scattering ◽  
Lidar Data ◽  
Night Time ◽  
Cloud Properties ◽  
Tropical Area ◽  
Signal Simulation ◽  
The One

The lidar remote sensing is the one important application to observe the aerosol and cloud of the atmosphere. Themicropulse lidar (MPL) return signals were studied in the tropical area. In this investigation, the single scatteringis analyzed by the physical properties of aerosol and cloud. The signal simulation of the single scattering predictsthe maximum optical thickness by saturation. It was observed that saturation optical thickness from the lidarsignal depends on the variation of extinction coefficient. This simulation is compared by the optical thicknessestimation from the lidar data. The MPL data (at wavelength of 523 nm) was determined, and the sky radiometer (atwavelength 500 nm) was used as reference data. The maximum optical thickness of lidar was 2.6 at night time,and the maximum optical depth of lidar and sky radiometer data on the same day were 2.25 and 1.7, respectively.

scholarly journals Detection and Control Bacteria Cause Grain Rot Burkholderia glumae on Rice

2019 ◽  
Vol 23 (2) ◽  
pp. 163
Author(s):  
Syahri Syahri ◽  
Renny Utami Somantri ◽  
Priatna Sasmita
Keyword(s):  
Rainfall Intensity ◽  
Effective Control ◽  
Burkholderia Glumae ◽  
Physiological Factors ◽  
Tropical Area ◽  
Resistant Varieties ◽  
Central Production ◽  
Production Areas ◽  
And Control ◽  
Group 1

Burkholderia glumae, before mid-2018, is categorized as plant quarantine pest A2 Group 1 that its existence has been detected in Indonesia. B. glumae  has been known to spread in the central production of rice in Java, Sumatra, Borneo dan Sulawesi. This review aimed to explain the strategies for B. glumae detection through its characteristics and to prevent the divergence  of this bacterium in Indonesia. The previous studies reported that the bacteria could reduce yield up to 75% and caused the decrease  of weight-grain or the increase  of empty grain. The disease intensity is affected by environmental and physiological factors such as warm temperature at nighttime and high rainfall intensity. The optimum temperature for the development of the disease is 30–35°C. Moreover, the pathogen could survive at a temperature of 41°C. The tropical area of 32-36°C are suitable for B. glumae. Recently, the effective control of the disease in the field has not been found yet. Meanwhile, early detection of the disease is not yet determined,  even though  it is necessary  to prevent its spread in rice cultivation in Indonesia. Detection of the disease by Agricultural Quarantine Agency as a frontline is needed to check the entry of the disease carried by the import activities of the seed. Detection in the suspected field by protection institutes through frequent surveillance in central production areas of rice should be considered  as an important task.. The effective techniques to prevent B. glumae are the use of resistant varieties, the practice of seed treatments (using antibacterial, bactericide, heat treatment or plant extract), and  the application of oxolinic acid to the crops.

scholarly journals Relationship between consistency parameters and granulation of fen soils

2013 ◽  
Vol 12 (3) ◽  
pp. 121-128
Author(s):  
Krzysztof Wilk
Keyword(s):  
Complex Analysis ◽  
Linear Equations ◽  
Clay Fraction ◽  
Building Design ◽  
Liquid Limit ◽  
Soil Parameters ◽  
Geotechnical Parameters ◽  
Substrate Quality ◽  
Liquidity Index ◽  
Clay Fraction Content

Determination of bearing capacity requires knowledge of the ground strength parameters. The best way to appreciate soil properties is the use of the direct research methods. In the case of less responsible buildings, projected on the simple ground structure, it often seems reasonable to adopt conservative soil parameters without performing a complex analysis. The base for determination the values of the geotechnical parameters is the estimation based on the correlation between the mechanical and geotechnical parameters of soil. It is important not only for the new building design, but also to facilitate the verification of the substrate quality during the execution of the work. This paper presents the relationship between granulation (clay fraction content) and soil consistency parameters (plastic limit, liquid limit, plasticity index and liquidity index). The analyzed values are determined as a result of alluvial ground studies. These soils were consequent upon the accumulation of river. The founded relationships were described by linear equations and were compared with the results presented in the geotechnical literature. These comparisons often show a significant effect of regional ground forming  conditions on the parameters of consistency.

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