Search all articles

The demand increase and passenger vehicles each year may result in unequal supply both the means (capacity vessels) as well as the port infrastructure, giving rise to become delayed transportation service or the transport waiting time at the port. This study aims to: 1) determine the sustainability of...

Critical thinking skills are one of the 21st-century skills and a basis to form a reflective judgment and argumentation on an issue. The aim of this study was to determine the profile of reflective judgment and argumentation skills of high school students in biology learning. The subjects of this study...

In this study, the topic studied was the characteristics of airflow passing through the gothic-type generator vortex by the smoke generator method. The purpose of this study was to visually observe the characteristics of the airflow on the upper surface passing through the NACA 43018 airfoil with varying...

A pot experiment was conducted to study the effects of exogenous abscisic acid (ABA) on photosynthetic characteristics of radish under aluminum (Al) stress. Five treatments were used in the experiment: seeds were soaked with 0 (CK), 1, 5, 10 and 20 mol-L-1 concentrations of abscisic acid solution. The...

A pot experiment was conducted to study the selenium accumulation characteristics of tomato seedlings under different concentrations of selenium. Four treatments were used in the experiment: soil was constructed by adding 0, 5, 10, 25 mg/kg exogenous selenium. The fresh weight and selenium contents in...

The high risk of natural disasters in Indonesia awakens all parties to the importance of disaster mitigation. One of such efforts is increasing disaster literacy ability. The purpose of this study was to develop a valid, reliable and practical disaster preparedness knowledge test. This research used...

Galangal essential oil (EO), which contains secondary metabolites such as cineol, hopefully can modify bacteria, causing biohydrogenation. The purpose of this study was to determine the effect of galangal EO dose on the fatty acids characteristics at in vitro rumen fermentation. Galangal as a source...

Galangal essential oil (EO) with cineol as the main component has antimicrobial activity. The level of nutrient digestibility in dairy cows is determined by the mechanism of action of the rumen microbes. The addition of galangal essential oil to dairy cows feed is expected to reduce the activity of proteolytic...

Watermelon rind contains high levels of citrulline and arginine, which can help reduce high blood pressure. Honey pineapple has a sweeter taste than other types of pineapple, which can reduce blood pressure in hypertensive patients, partly due to its potassium content. Reduction of added sugars such...

Background: At least 15–20% of all ischemic strokes are attributable to atherosclerosis [1]. We analyzed three statistical methods for 12 traditional risk factors (TRF) i.e. age, sex, arterial pressure, Intima Media Tickness (IMT), Pulse Wave Velocity (PWV) in order to predict the presence of carotid...

The playdough guidebook has not been used yet in SDN Kalisegoro. This study aims to develop a playdough handbook aimed at knowing feasibility, as well as testing the effectiveness of media. Media is intended to improve learning outcomes. I conducted Research and Development (R&D), the development...

The measurement of deformation and settlement of the ground surface under the action of dynamic loads is one of the urgent problems faced by geotechnical engineering. The rock mass is a non-homogeneous material and there are often a large number of non-penetrating fractures within the matrix. The rock...

The purpose of this study is to know the level of parents’ understanding on their children development needs at their first 1000 days because malnutrition and development delayed cases happened to babies in Malang. This study is done by using quantitative descriptive method. As the result, it is shown...

This study aims to determine the effect of doses of manure and the concentration of organic herbicides on the growth and yield of cucumber (Cucumis sativus L.) cultivars Bhakti. The experimental design used Randomized Complete Block Design (RCBD). This experiment consisted of 12 combinations of manure...

Citrus diseases were studied which found anthracnose caused by Colletotrichum gloeosporioides and root rot caused by Phytophthora parasitica which seriously invaded in Thailand where citrus are grown. The chemical fungicides have been traditionally using by the growers until those chemicals are non-effective...

The Musi River is a vital shipping lane for Indonesia. It has varying depths and widths that can impact the safety of passing vessels. To determine the river’s depth, a bathymetric survey is required. Primary data collection was conducted by mapping the shipping lane using a Single Beam Echosounder (SBES)...

This study aims to determine the dimensional accuracy and porosity of polylactic acid scaffold using 3D printing and the value of the effective elastic modulus. The main contribution of this research is to obtain the most suitable scaffold porosity for use as cancellous bone implants. It was obtained...

Spodoptera exigua (Lepidoptera: Noctuidae) is the common pest known for attacking shallot crop. Baculovirus (Nucleopolyhedrovirus: NPV) is a biological agent that is widely used as the pest control agent. However, the activity of NPV is deteriorated when applied in the field due to the influence of ultraviolet...

Background: It has been proposed that high blood pressure (BP) in young people is due to high cardiac output (CO) with normal total peripheral resistance (TPR) – a hyperkinetic/hyperdynamic circulation. We investigated this in a large, population- based cohort of adolescents. Methods: The study was...

The glass lettuce was made as material, the effect of different concentrations (0, 50, 100, 150, 200 μmol·L-1) of exogenous melatonin on photosynthetic pigments and photosynthetic characteristics of lettuce seedlings under salt stress was studied. The results showed that when the concentration of melatonin...

The Learning Cycle 7E (LC-7E) with Socio-scientific Issue (SSI) Context learning material is learning material that links chemistry learning with science issues and involves moral and ethical component. It will lead students to explore and develop their knowledge by connecting of issues or events in...

The conceptual knowledge and procedural knowledge are able to equip students to have new skills in the era of the Industrial Revolution 4.0. Because, both of these knowledge are used to solve a problem correctly. This study aimed to determine the conceptual knowledge and procedural knowledge of Biology...

This research aims to; (1) determine the level of income of cassava farming in Central Lampung Regency, (2) identify sources of farming risk in Central Lampung Regency and (3) determine the level of risk of cassava farming in Central Lampung Regency. Central Lampung Regency was chosen as the research...

The main goal of this research is to find torque criteria for the stable 2-DOF planar manipulator robot (PMR) with identical Stokes damping in a slow-varying (SV) regime. The analysis starts by finding the 2-DOF PMR with Stokes damping Equation of Motion (EOM) via the Lagrangian mechanics. In the next...

Rice bran is a feed material that is commonly given to poultry, but the amount of its use is relatively low because of its high fiber content. Water hyacinth (Eichhornia crassipes) leaf has a chemical composition similar to rice bran and its availability is abundant but its quality as feed material for...

In response to the environmental characteristics of the tropical rainforest climate in Central America, where the annual rainfall reaches 4,000 mm, this study systematically establishes control points and restricted zones for mineral aggregate gradation in strict accordance with Superpave specifications...

Exclusive breastfeeding is a nutritional intake that must be given to babies aged 0–6 months to help maximize their growth and development and also to prevent babies from getting sick. Mothers' knowledge, mothers’ occupation, and support of health workers are some factors identified affecting the...

Introduction: Sarcopenia, the loss of skeletal muscle mass and strength that occurs with advancing age [1] is correlated with functional decline and disability but little is known about its relationship with cardiovascular risk. Bioimpedence analysis (BIA) is a validated technique for measuring muscle...

Background and Aims: The increase in arterial stiffness and pressure pulsatility with age is identified as a key contributor to cognitive impairment; nevertheless, the underlying hemodynamic mechanisms remain unclear. A hypothesis, proposed by (1), suggests that the preferential stiffening of the central...

The physical characteristics of the surface soil are the crucial soil characteristics related to landslides. They can cause landslides and change due to landslides. The physical characteristics of the surface soil in agricultural land play an important role in providing nutrients and as a medium for...

Electric flux method was adopted in this paper to carry out experimental study on influences of fly ash and basalt fiber contents on chloride penetration resistance performance of high-performance concrete. First, influences of fly ash content were investigated by virtue of uni doped fly ash. Then, basalt...

Cappuccino is beverage from Italy, made from espresso, heated milk, and whipped milk until frothy, but now people are beginning to use soy milk as an alternative milk in making cappuccino. Soy milk is product made from soy bean seed extract, but soy milk has beany flavour and has fat content lower than...

Hot and humid environments are ubiquitous in some special workplaces, such as deep mines, aviations, and military territories. High–temperature radiation is a serious threat to the health of high temperature operation personnel. Exposed to high temperatures for a long time will inevitably lead to dehydrations,...

Penelitian bertujuan untuk mempelajari pengaruh lama inkubasi pada fermentasi onggok menggunakan Mutan Trichoderma AA1. Empat level lama fermentasi yang meliputi 0 (kontrol), 1, 2, dan 3 minggu diperlakukan untuk fermentasi onggok. Percobaan dirancang dengan One-way classification of Completely Randomized...

The use of antibiotic in poultry is not allowed due to its potential of bacterial resistance and its potential of residue in the poultry products. Brown seaweed (Sargassum crassifolium) contains sugar, sulphate, and uronic vitriol which display antibacterial and antiviral activities. This research aims...

Wedi snakefruit (Salacca Zalacca) was a native fruit from Bojonegoro District. Snakefruit contains secondary metabolites that act as antioxidants, this allows the rind of snakefruit to also contain the same secondary metabolites. Antioxidants in snakefruit rind can be used as a source of natural antioxidants...

Background: Reservoir pressure is typically estimated from the pressure waveform information only. Comparability with estimates made using pressure and flow depend on assumptions, e.g. a proportional relationship between excess pressure and flow [1]. In this study, we compared (i) results using flow...

The reduction of two nonlinear equations of the type □u+F(u, u1)u0 = 0 with respect to all rank three subalgebras of a subdirect sum of the extended Euclidean algebras A ~E(1) and A ~E(3) is carried out. Some new invariant exact solutions of these equations are obtained.

The glass lettuce was made as material, the effect of different concentrations (0, 50, 100, 150, 200 μmol·L-1) of exogenous melatonin on growth, antioxidant enzyme activity and osmotica of lettuce seedlings under salt stress was studied. The results showed that the root length, stem diameter, and dry...

Breastfeeding protects mothers from osteoporosis. Osteoporosis, the thinning of bone tissue and loss of bone density over timeThe women that did not breastfeed has four times greater risk of osteoporosis and often got hip fracture in years after menopause than women who are breastfeeding. After breastfeeding,...

We measured the major and trace element contents and Rb-Sr isotopic compositions of 9 tektites from the Dalat area, Vietnam. All the samples studied are splash-form tektites which show pitted or grooved surfaces with schlieren structures on some surfaces. The trace element ratios Ba/Rb (avg. 4.00), Th/Sm...

The study aimed to investigate the effect of storage time on the physical properties of vegetable-tanned goat leather. We divided the storage time into three treatments, namely P0 (0 months), P1 (3 months), and P3 (12 months). The observation parameters for investigation included tensile strength, elongation,...

Cascara is a herbal drink made from dried coffee husks. Cascara has a strong sour taste and a brownish red color similar to tea. Cascara contains polyphenol and antioxidant compounds. One effort to improve the quality of cascara products is to combine them with Moringa leaves (Moringa oleifera L.). Compounds...

The Lie algebra L(h) of symmetries of a discrete analogue of the non-linear Schrödinger equation (NLS) is studied. A five-dimensional subspace of L(h), generated by both point and generalized symmetries, transforms into the five-dimensional point symmtry algebra L(0) of the NLS equation. We use the lowest...

We present a numerical study of the nonlinear system of 4 0 equations of motion. The solution is obtained iteratively, starting from a precise point-sequence of the appropriate Banach space, for small values of the coupling constant. The numerical results are in perfect agreement with the main theoretical...

The acidified soil caused by the acid rain has become a global problem, however, its effects to the microorganisms in the soil is not well understood. The authors employed a series of physiological and biochemical experiments to test and analyze three typical acidified and the remediated soil like grassland...

This research aimed to find out the effect of addition nutmeg (Myristica fragrans Houtt) leaves tannin on in vitro microbial protein, total protozoa, ammonia concentration (NH3), and methane (CH4) production. Materials used in this research were nutmeg (Myristica fragrans Houtt) leaves as a source of...

Psychrophilic yeasts with unique properties have recently become a new source of biologically active products. However, psychrophilic microorganisms, including yeasts that inhabit Mongolian permafrost, are practically unknown. Therefore, this study was the first attempt to reveal living organisms hidden...

Background: Within the H2020 CARDIS project, we explore the use of a Laser Doppler Vibrometer (LDV) [1] to detect asymptomatic carotid stenosis from measurement of skin vibrations on the neck of affected patients. We hypothesise that flow instabilities induced by the stenosis will propagate as mechanical...

Background: We recently reported that central blood pressure (BP) obtained non-invasively in chronic kidney disease (CKD) patients significantly underestimated the central BP with decreasing eGFR in comparison with invasively measured true central BP in the aorta. This post-hoc analysis investigated...