scholarly journals Penggunaan daun ketumbar (coriandrum sativum L.) sebagai penjernih air di Desa Meka Praya Tengah

2021 ◽  
Vol 1 (1) ◽  
pp. 14-18
Author(s):  
Pahrurrozi Pahrurrozi ◽  
Dwi Agustini ◽  
Rio Satriyantara
Keyword(s):  
Surface Water ◽  
Water Temperature ◽  
Water Availability ◽  
Dry Season ◽  
Coriandrum Sativum ◽  
Clean Water ◽  
Life Aspect ◽  
Human Needs ◽  
Coriander Leaves

Abstract Water is the principal human needs. Utilization in all life aspect. However water availability in every area is different. Meka Village with location in Central Praya Distric Central Lombok usually deficiency of clean water in dry season. Public make use of surface water to fulfill needs. This community dedication aim at give society way to process and use coriander leaves as ingredient water clarifier. Coriander leaves have absorbs ability to solute in the water and have antioxsidants coumpound. This proven that application coriander leaves able to lowered water temperature amounting to 3,4 ℃ and ph amounting to 5,4. Based on these research could concluded that coriander leaves able to clarifier water because have nature to absorbs solute in the water and also contain antioxidants compound

scholarly journals Environmental Variables and Ecological Distribution of Ichthyofauna Assemblages in the Calabar River, Nigeria: Present and Future Prospects

2016 ◽  
Vol 74 (4) ◽  
pp. 159-171
Author(s):  
Andem Bassey Andem ◽  
Sunday Ben Ekanem ◽  
Esien Ene Oku
Keyword(s):  
Surface Water ◽  
Water Temperature ◽  
Environmental Variables ◽  
Fish Fauna ◽  
Dry Season ◽  
Fish Diversity ◽  
Surface Water Temperature ◽  
Future Prospects ◽  
Ecological Distribution ◽  
Wet Season

Abstract Studies on environmental variables and ecological distribution of ichthyofauna assemblages were conducted in the Calabar River. Surface water and ichthyofauna were sampled in order to provide baseline or reference data on the Calabar River at present as regard its future prospects. Seasonal variation shows significant differences in surface water temperature, pH, DO, BOD, conductivity, TDS and TSS between sampling stations and insignificant differences in heavy metals such as cadmium, chromium, iron and copper between sampling stations. Twenty six species of fish fauna were identified belonging to twenty two families. Mugilidae, Clariidae, Cichlidae, Gobiidae and Sciaenidae were the most abundant for both wet and dry season, while Clupeidae, Bathyclupeidae, Carangidae and Sphyraenidae were low in the wet season but high in the dry season. Chromium, copper, surface water temperature, DO correlate significantly with the presence of E. fimbriata, B. soporator, M. sebae, C. gariepinus, M. loennbergii, C. guentheri and P. babarus. The overall values of biotic diversity indices ranged from 0.0504-0.0745 for Simpson’s Index, 2.770-3.095 for Shannon Index, 2.821-3.105 for Margalef’s Index and 0.8606-0.9498 for equitability. However, the presence of certain fish fauna in polluted and non-polluted parts of the river indicates that they could be used as potential bioindicators in assessment and biomonitoring of the river. The methods used in identifying fish diversity proved their applicability for future studies.

scholarly journals Relationship between water temperature and phytoplankton communities in Ba Lai river, Viet Nam

2020 ◽  
Vol 23 (2) ◽  
pp. 536-547
Author(s):  
Yen Thi Hoang Tran ◽  
Luu Thanh Pham
Keyword(s):  
Surface Water ◽  
Linear Regression ◽  
Water Temperature ◽  
Rainy Season ◽  
Linear Regression Analysis ◽  
Dry Season ◽  
Trophic Levels ◽  
Species Number ◽  
Phytoplankton Assemblage ◽  
Phytoplankton Communities

Introduction: Phytoplankton which can affect higher trophic levels play a pivotal role as primary producers. Phytoplankton structure and diversity may, besides other factors, be controlled by the changing of water temperatures. Hence, the present study aimed to determine some relationship between phytoplankton assemblage and water temperature in Ba Lai River, Vietnam. Methods: In this research, sample data along the Ba Lai Estuary during two surveys were carried out in rainy season (September, 2017) and in dry season (March, 2018), and analyzed by Spearman's correlation and Linear regression analysis to find the correlations. Results: The results showed that the temperature of surface water in Ba Lai River was quite stable spatially. A total of 128 species belonging to 5 groups- namely cyanobacteria, diatoms, green algae, euglenids and dinoflagellates- were recorded in which diatoms were clearly dominant. Additionally, multiple stepwise linear regression revealed that phytoplankton assemblage correlated significantly with the temperature of surface water. The water temperature had a significant positive correlation with chlorophyll-a concentration but was negatively correlated with Margalef’s diversity index in the rainy season. Moreover, the significant negative association of water temperature with biomass of phytoplankton and biomass of diatoms, which was principal in species number, were determined in the dry season. Conclusion: This study investigated the phytoplankton communities and found their correlation with environment in the area, and demonstrated advantages of phytoplankton which warrant their further research.

scholarly journals KELAYAKAN DISTRIBUSI DAN KETERSEDIAAN AIR BERSIH DI DESA MOJO KECAMATAN PADANG KABUPATEN LUMAJANG

2018 ◽  
Vol 12 (01) ◽  
pp. 15
Author(s):  
Mochtar Nova Mulyadi ◽  
Elida Novita ◽  
N. Nurhayati
Keyword(s):  
Water Resources ◽  
Water Balance ◽  
Population Growth ◽  
Flow Rate ◽  
Water Availability ◽  
Residential Area ◽  
Dry Season ◽  
Clean Water ◽  
The Government

The limitation to get clean water causes the community to utilize the existing water resources. One of the villages needs clean water during the dry season in Mojo Village Padang District, Regency Lumajang. The need for clean water was increasing as the population growth. The population of the Mojo Village was 3,901 people. The needs of clean water were supplied from Jirun wellspring. The Jirun wellspring was located 20 meters lower than a residential area. The government of Lumajang Regency installed a hydrant pump to solve the problem for distributing the clean water from Jirun wellspring to the residential area. The flow rate of Jirun wellspring reached 22.91 l/s. The index of clean water criticality was 3.44% namely “uncritical” that indicated Mojo Village was abundant water availability. Keywords: dongki pump, water balance

Levels of selected metals in coriander (Coriandrum sativum L.) leaves cultivated in four different areas of Ethiopia

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Pearson Correlation ◽  
Absorption Spectrometry ◽  
Coriandrum Sativum ◽  
Good Source ◽  
Digestion Method ◽  
Flame Atomic Absorption ◽  
Significant Difference ◽  
Metal Levels ◽  
Good Percentage ◽  
Coriander Leaves

Coriander (Coriandrum sativum L.) is one of the herbs which is used for medicinal and food purposes. In the present study the levels of selected metals in coriander leaves were determined in the samples collected from four different farmlands (Sebeta, Mekanisa, Holeta and Gefersa) in Ethiopia where its cultivation is common. The levels of metals were determined after digestion of samples with the mixture of 4 mL of HNO3 and 4 mL of HClO4 at 300 oC for 3:00 hours by flame atomic absorption spectrometry. The optimized wet digestion method for coriander leaves analysis was validated through the recovery experiment and a good percentage recovery was obtained (93.2-101%). The levels of metals were found in the range Ca, 2319–3503 mg/kg; Zn, 33.4–54.8 mg/kg and Cr, 5.55-9.86 mg/kg while the trace metals Cu, Ni, Cd and Pb were too low to be detected. The results indicated that Ethiopian coriander is a good source of essential metals and free from the toxic metals Pb and Cd. A statistical analysis of variance (ANOVA) at 95% confidence level indicated that there is significant difference (p < 0.05) in the levels of all detected metals between the four sample means. The Pearson correlation was used to predict the dependence of metal levels on one another. The levels of the metals determined in this study compared well with those reported for coriander leaves from some other parts of the world.

Surface water availability, Pickens County, Alabama

1975 ◽  
Author(s):  
Marvin E. Davis ◽  
Alfred L. Knight
Keyword(s):  
Surface Water ◽  
Water Availability

scholarly journals Surface Water Temperature Predictions at a Mid-Latitude Reservoir under Long-Term Climate Change Impacts Using a Deep Neural Network Coupled with a Transfer Learning Approach

Water ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1109
Author(s):  
Nobuaki Kimura ◽  
Kei Ishida ◽  
Daichi Baba
Keyword(s):  
Climate Change ◽  
Surface Water ◽  
Water Temperature ◽  
Transfer Learning ◽  
Air Temperature ◽  
Climate Models ◽  
Temporal Variations ◽  
Training Data ◽  
Surface Water Temperature

Long-term climate change may strongly affect the aquatic environment in mid-latitude water resources. In particular, it can be demonstrated that temporal variations in surface water temperature in a reservoir have strong responses to air temperature. We adopted deep neural networks (DNNs) to understand the long-term relationships between air temperature and surface water temperature, because DNNs can easily deal with nonlinear data, including uncertainties, that are obtained in complicated climate and aquatic systems. In general, DNNs cannot appropriately predict unexperienced data (i.e., out-of-range training data), such as future water temperature. To improve this limitation, our idea is to introduce a transfer learning (TL) approach. The observed data were used to train a DNN-based model. Continuous data (i.e., air temperature) ranging over 150 years to pre-training to climate change, which were obtained from climate models and include a downscaling model, were used to predict past and future surface water temperatures in the reservoir. The results showed that the DNN-based model with the TL approach was able to approximately predict based on the difference between past and future air temperatures. The model suggested that the occurrences in the highest water temperature increased, and the occurrences in the lowest water temperature decreased in the future predictions.

Impact of climate warming on the surface water temperature of plateau lake

2021 ◽  
Author(s):  
Zongqi Peng ◽  
Jiaying Yang ◽  
Yi Luo ◽  
Kun Yang ◽  
Chunxue Shang
Keyword(s):  
Surface Water ◽  
Water Temperature ◽  
Climate Warming ◽  
Surface Water Temperature ◽  
Plateau Lake
Sign in / Sign up

Export Citation Format

Share Document