scholarly journals Analisis Profil Konsentrasi Pb di Air Waduk Saguling

2018 ◽  
Vol 2 (3) ◽  
Author(s):  
Ade Arinda ◽  
Eka Wardhani
Keyword(s):  
Rainy Season ◽  
Government Regulation ◽  
Water Reservoir ◽  
Secondary Data ◽  
Quality Standard ◽  
Dry Season ◽  
Domestic Waste ◽  
Water Based ◽  
Different Seasons ◽  
And Control

 ABSTRAKAir Waduk Saguling saat ini menunjukkan penurunan, baik secara kualitas maupun kuantitas akibat aktivitas manusia yang menghasilkan limbah rumah tangga, industri, pertanian, peternakan, perikanan dan pertambangan. Salah satu pencemar di Waduk Saguling adalah logam berat. Penelitian ini bertujuan menganalisis konsentrasi Pb di perairan Waduk Saguling pada musim yang berbeda. Penelitian ini menggunakan data sekunder yang diperoleh dari PT Indonesia Power tahun 2008-2017. Data berasal dari tiga kedalaman yaitu kedalaman permukaan, tengah, dan dekat dasar perairan. Berdasarkan hasil penelitian menunjukkan konsentrasi Pb di musim kemarau lebih tinggi daripada musim hujan dan sebagian sudah melebihi baku mutu yang mengacu pada Peraturan Pemerintah No. 82 Tahun 2001 tentang Pengelolaan Kualitas Air dan Pengendalian Pencemaran Air untuk logam Pb sebesar 0,03 mg/L. Parameter pendukung yang di analisis yaitu parameter DO, pH, TDS, suhu, kekeruhan, dan kesadahan. Berdasarkan hasil analisis statistik menggunakan PCA, parameter yang paling mempengaruhi konsentrasi Pb di musim kemarau adalah kekeruhan dan suhu sedangkan musim hujan adalah TDS.Kata kunci: Musim, Pb, PCA, Waduk SagulingABSTRACTSaguling Water Reservoir currently shows a decline, both in quality and quantity due to human activities that produce domestic waste, industry, agriculture, livestock, fishery and mining. One of the pollutants in Saguling Reservoir is heavy metal. The research aims to analyze the concentration of Pb in the waters of Saguling Reservoir in different seasons. This research uses secondary data which is obtained from PT Indonesia Power in 2008-2017. The data comes from three depths: surface depth, center, and near bottom of water. Based on the results of the research shows that the concentration of Pb in the dry season is higher than the rainy season and some have exceeded the quality standard which refers to Government Regulation no. 82 of 2001 on the Management of Water Quality and Control of Water Pollution for Pb metal by 0.03 mg/L. The supporting parameters in the analysis are DO, pH, TDS, temperature, turbidity, and hardness parameters. Based on the results of statistical analysis using PCA, the parameters that most influence the concentration of Pb heavy metals in the dry season are turbidity and temperature and rainy season is TDS.Keywords: Season, pb, pca, saguling reservoi

Stable Isotopes Analysis of Precipitation in Subtropical Plateau of Yunnan

2014 ◽  
Vol 1010-1012 ◽  
pp. 1059-1063
Author(s):  
Wei Guan ◽  
Tao Fan ◽  
Xiu Qin Zhu
Keyword(s):  
Stable Isotopes ◽  
Rainy Season ◽  
Mean Value ◽  
Dry Season ◽  
Precipitation Line ◽  
Stable Isotopic ◽  
Different Seasons ◽  
Geographical Position ◽  
The Mean ◽  
The Relationship

To elucidate the relationship between stable isotopes of precipitation (SIP) and the extreme drought in Kunming area, based on the stable isotopes data of the GNIP in Kunming site from 1986 to 2003, the precipitation line equation is brought forward and the seasonal change rule of stable isotopes are discussed. The stable isotopic compositions of precipitation exhibit great diversities in different seasons during to influences of multiple factors, such as monsoon, rainfall amount moisture source and others. The δ18O values in rainwater exhibit significant seasonal variations, the average of-10.12‰ in rainy season, the dry season is-4.5‰, having lower values in the rainy season and higher one in the dry season. The amount effect of precipitation is very distinct, that concealed the temperature effect. Got the special geographical position,dvalues present unique characteristics, the average ofdvalues is 10.78‰ in rainy season, and is 4.86‰ in dry season, the mean value is generally lower than most parts of the world.

The Variation of the Contents of Pb in Surface Waters in Jiaozhou Bay

2014 ◽  
Vol 651-653 ◽  
pp. 1492-1495 ◽  
Author(s):  
Dong Fang Yang ◽  
Hong Guang Ge ◽  
Feng Min Song ◽  
Chen Li ◽  
Bo Yang
Keyword(s):  
Surface Waters ◽  
Sea Water ◽  
Jiaozhou Bay ◽  
Pollution Prevention ◽  
Quality Standard ◽  
Ocean Current ◽  
Different Seasons ◽  
Grade Ii ◽  
June July ◽  
And Control

This paper analyzed the content and distribution of Pb in surface waters in Jiaozhou Bay in 1982. Results showed that Pb content in April, June, July and October ranged from 0.49-3.25μg.L-1, 0.45-3.35μg.L-1, 0.30-2.67μg.L-1and 0.33-0.67μg.L-1, respectively, complied with Grade I (1.00μg.L-1) or Grade II (5.00μg.L-1) in Sea water quality standard (GB 3097-1997) of China. As a whole, Jiaozhou Bay waters in 1982 was very lightly polluted by Pb. Non-point source was the major source of Pb in this bay, including atmosphere deposition, ocean current from the offshore, and the transportation of the head of the islands. The content, distribution and source of Pb showed significant seasonal variations, and different pollution prevention and control measurements should be took in different seasons.

scholarly journals Characterization of Vietnamese Lacquer Collected in Different Seasons

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Rong Lu ◽  
Kenichiro Anzai ◽  
Bach Trong Phuc ◽  
Tetsuo Miyakoshi
Keyword(s):  
Rainy Season ◽  
Laccase Activity ◽  
Water Concentration ◽  
Dry Season ◽  
Composition Analysis ◽  
Drying Time ◽  
Lipid Component ◽  
Different Seasons

Vietnamese lacquers collected every month from June to March of next year were characterized. Composition analysis showed that lacquer collected in rainy season contained much water, while those collected in dry season contained more lipid component. Although hardness of lacquer films is not very hard, lacquers tapped in all seasons can reach hard dry (HD) within 48 hours. Refining lacquer can accelerate drying time but the water concentration should be maintained around 10 wt% for laccase activity.

scholarly journals The Effect of N in Organic + Inorganic Liquid Fertilizer on the Activity Ability and Antioxidant Properties of Tea Shoots (Camellia sinensis L. O. Kuntze) in the Rainy and Dry Season

Agrologia ◽  
2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Zakarias Frans Mores Hukom
Keyword(s):  
Antioxidant Activity ◽  
Active Ingredient ◽  
Rainy Season ◽  
Block Design ◽  
Antioxidant Properties ◽  
Dry Season ◽  
Liquid Fertilizer ◽  
Nitrogen Levels ◽  
Randomized Block Design ◽  
Different Seasons

Antioxidant is a term related to the activity ability and properties of the active ingredient.  The higher the ability of the antioxidant activity of an active ingredient, the stronger its antioxidant properties are to ward off various free radical compounds due to oxidative stress. The activity ability and antioxidant properties of tea shoots often fluctuate with changing seasons.  This study investigated the effect giving nitrogen levels in organic + inorganic liquid fertilizers on the ability of activity and antioxidant properties of tea shoots in different seasons. The experimental design used was a over season complete randomized block design consisting of 5 levels of fertilization concentration in the rainy and dry seasons. The results showed that the application of organic + inorganic liquid fertilizers without the addition of N concentration in the dry season had a significant effect on the antioxidant activity of tea shoots by 88.14%, and 34.15% higher than control plants in the rainy season and 41.81% more. Height of control plants in the dry season. The IC50 value of tea shoots in the rainy season and dry season has very strong antioxidant properties where the order of the antioxidant properties of the control plants < all concentrations of adding N to organic + inorganic liquid fertilizers < concentration of organic + inorganic liquid fertilizers without the addition of N.Keywords: Ability Antioxidant Activity, Organic + Inorganic Liquid Fertilizer, Tea shoots, Antioxidant Properties.

scholarly journals PERBANDINGAN KASUS MALARIA BERDASARKAN MUSIM DI DAERAH ENDEMIS WILAYAH KERJA PUSKESMAS HANURA KABUPATEN PESAWARAN

2020 ◽  
Vol 12 (2) ◽  
pp. 167-176
Author(s):  
Devita Febriani Putri ◽  
Tusy Triwahyuni ◽  
Ismalia Husna ◽  
Zihan Aulia Nugraha
Keyword(s):  
Health Center ◽  
Falciparum Malaria ◽  
Rainy Season ◽  
Univariate Analysis ◽  
Plasmodium Species ◽  
Secondary Data ◽  
Dry Season ◽  
T Test ◽  
P Value

Pesawaran District, Lampung Province, is a high malaria-endemic area. Environmental factors, such as rainfall in the rainy season and dry season have an effect on malaria cases. The increase in malaria cases and the causes of infection are thought to be related to the changing seasons. The purpose of the study was to determine the comparison of malaria cases based on the seasons in the endemic areas of the Hanura Health Center Pesawaran District. This research is descriptive, with total sampling taken in the form of secondary data per malaria case and Plasmodium species in Hanura Health Center in 2016-2017. Determination of the rainy season and the dry season is based on the average rainfall data obtained at BMKG Lampung Pesawaran Climatology Station in 2018. Univariate analysis was carried out to determine the frequency distribution of malaria cases and Plasmodium species based on the season, and Independent T-test to compare malaria cases in the rainy and dry season. In total there were 4266 malaria cases consisting of malaria cases in the rainy season as many as 2486 cases with falciparum malaria as many as 1414 cases and malaria cases during the dry season as many as 1780 cases with falciparum malaria as many as 899 cases. The results showed significant differences in malaria cases during the rainy season and dry season with a P-value of 0.046. High rainfall (> 50mm) during the rainy season allows an increase in the volume of water from upstream to sea resulting in rivers, ponds, and sewers becoming habitats potential for the breeding of Anopheles spp. Abstrak Kabupaten Pesawaran Provinsi Lampung merupakan daerah endemis tinggi malaria yang mengalami perubahan musim setiap tahunnya. Faktor lingkungan seperti curah hujan pada musim hujan dan musim kemarau berpengaruh pada kasus malaria. Peningkatan kasus malaria dan penyebab infeksinya diduga terkait dengan perubahan musim yang terjadi.Tujuan penelitian ini untuk mengetahui perbandingan kasus malaria berdasarkan musim di daerah endemis wilayah kerja Puskesmas Hanura Kabupaten Pesawaran. Jenis penelitian adalah deskriptif, dengan pengambilan sampel secara total sampling berupa data sekunder per bulan kasus malaria dan spesies Plasmodium di Puskesmas Hanura pada tahun 2016-2017. Penentuan musim hujan dan musim kemarau berdasarkan data rata- rata curah hujan yang didapatkan di BMKG Stasiun Klimatologi Pesawaran Lampung tahun 2018. Analisis univariat dilakukan untuk mengetahui distribusi frekuensi kasus malaria dan spesies Plasmodium berdasarkan musim, dan uji T-test Independent untuk membandingkan kasus malaria pada musim hujan dan kemarau. Total sampel terdapat 4266 kasus malaria yang terdiri dari kasus malaria pada musim hujan sebanyak 2486 kasus dengan malaria falsiparum sebanyak 1414 kasus dan kasus malaria pada musim kemarau sebanyak 1780 kasus dengan malaria falsiparum sebanyak 899 kasus. Hasil penelitian menunjukkan perbedaan yang bermakna pada kasus malaria pada musim hujan dan musim kemarau dengan nilai P=0,046. Curah hujan yang tinggi (>50mm) pada musim hujan memungkinkan adanya peningkatan volume air dari hulu ke laut yang mengakibatkan sungai, kolam, tambak dan selokan menjadi  habitat potensial berkembangbiaknya vektor malaria nyamuk Anopeles spp.

scholarly journals Effects of ascorbic acid supplementation on the performance of growing pullets

2021 ◽  
Vol 35 (2) ◽  
pp. 186-194
Author(s):  
R. A. Sobayo ◽  
E. B. Oguntona ◽  
O. A. Osinowo ◽  
D. Eruvbetine ◽  
A. M. Bamgbose ◽  
...  
Keyword(s):  
Growth Rate ◽  
Ascorbic Acid ◽  
Rainy Season ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Dry Season ◽  
Different Seasons ◽  
Optimum Response ◽  
Dietary Treatments ◽  
The Cost

Two studies were conducted to evaluate the nutritional effects of supplementary ascorbic acid (AA) at levels of 0, 100, 200, and 300 mg/kg in the diets of growing pullets reared at different seasons (dry season and rainy season).240 eight weeks-old Harco pullet chicks were used in each trial, they were randomly assigned to each of the four dietary treatments in three replications of twenty chicks per replicate. Each trial lasted 12 weeks (84 days) during which data were collected and a 2 X 4 factorial arrangement was employed in the analysis of data collected. Both ascorbic acid and season significantly affected (P<0.05) growth rate with better growth rate reported in the dry season. Body weights at first lay exhibited a linear reduction with increasing concentration of ascorbic acid (P<0.05). Seasonal variation significantly affected (P<0.05) age and egg weight at first lay with higher values obtained in the rainy season. The cost-benefit analysis of supplementary ascorbic acid in the diet of experimental birds revealed that inclusion of the graded levels of ascorbic acid increased the cost of feed in a linear fashion across the dietary treatments. At the growing stage, cost of feed per kg weight gain was found to be lowest in birds fed 0 mg/kg AA. It was evident that at the growing stage, optimum response occurred with supplementation of 300 mg/kg AA.

scholarly journals Perhitungan Beban Pencemaran Air Sungai Cibabat Kota Cimahi Provinsi Jawa Barat

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Mochammad Azhar Rais Alfaroby ◽  
Eka Wardhani
Keyword(s):  
Water Quality ◽  
Secondary Data ◽  
Domestic Wastewater ◽  
Quality Analysis ◽  
Wastewater Management ◽  
Pollutant Load ◽  
Effective Technology ◽  
Different Seasons ◽  
And Control

The lack of domestic wastewater management services in the Cibabat River Basin has resulted in the Cibabat River being a place to collect domestic wastewater. This of course can reduce water quality  as well as reduce the function of the river itself.  The Cibabat river is known to be a sub-watershed of the Citarum River with a surface   area of  1,855 km2. Activities in the Cibabat watershed  contribute  to the pollution load that  causes the water quality of the Cibabat River to decline, which of course has an impact on the decrease  in the quality of the river and increase  in the polluting  load that the river will receive. The research method uses the calculation of the pollutant  load based on Permen LH 115/2003. The data used are  secondary data from DLH Cimahi City, which  conducted a water quality analysis at three points during  three different seasons in 2019. One of the steps to overcome and control the pollution that occurs is to determine the actual pollutant load so that it can easily determine the application of effective technology  for controlling river water pollution  in the Cibabat River at theCimahi City.

scholarly journals Comparative Study of the Chemical Composition of the Essential Oil of Lippia oreganoides Collected in Two Different Seasons in Venezuela

2006 ◽  
Vol 1 (3) ◽  
pp. 1934578X0600100 ◽  
Author(s):  
Janne Rojas ◽  
Antonio Morales ◽  
Sara Pasquale ◽  
Alejandro Márquez ◽  
María Rondón ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Comparative Study ◽  
Essential Oils ◽  
Rainy Season ◽  
Dry Season ◽  
Caryophyllene Oxide ◽  
Different Seasons ◽  
Made In

The essential oils from the leaves of Lippia oreganoides collected in June 2003 (rainy season) and February 2004 (dry season) were analyzed by GC/MS. Thymol (61.9% and 44.7%, respectively) and carvacrol (7.9% and 16.8%, respectively) proved to be the major constituents of both collections. Linalool (0.4%) was present only in the collection made in June 2003, while carvacryl acetate (0.6% and caryophyllene oxide (1.6%) were only detected in the February 2004 collection.

scholarly journals Pemuliaan Tanaman Nilam (Progestemon cablin) Lokal Melalui Perkembangbiakan Vegetatif

2016 ◽  
Vol 18 (2) ◽  
pp. 123
Author(s):  
Hermin Pancasakti Kusumaningrum ◽  
Endang Dwi Purbajanti ◽  
Agus Setiadi
Keyword(s):  
Essential Oil ◽  
Vegetative Propagation ◽  
Rainy Season ◽  
Raw Materials ◽  
Climatic Conditions ◽  
Dry Season ◽  
The Other ◽  
Surrounding Area ◽  
Local Varieties ◽  
Different Seasons

Patchouli essential oil is an dominant product from Batang but its production has not been able to meet export needs. The main problem in the production of essential oil of patchouli is limited amount of seeds and dry season effect on the growth of patchouli. On the other hand, society units of patchouli essential oil is very dependent on the availability of raw materials  of patchouli. Searching of patchouli local varieties must  develop in order to  encourages of sustainibility of patchouli production. The purpose of this activity is search and propagate patchouli plant from local varieties that can survive in different seasons of the year according to the climatic conditions of Batang. The study was conducted with the search and propagation of patchouli plant varieties used by farmers in Batang which is Sidikalang varieties and local varieties originating from Batang region and the surrounding area. Furthermore, the vegetative propagation using cuttings will be use followed by its growth observation during dry and rainy season. Results showed that the activities of patchouli plant local varieties of Bandungan, Kendal and Batang showed the best growth in the dry season. Key words: patchouli, vegetatif growth, essential oil.

scholarly journals Quality Assessment of Drinking Well Water near Dumpsite at Ogidi-Oloje Ilorin, Kwara State, Nigeria

2020 ◽  
Vol 24 (2) ◽  
pp. 323-328
Author(s):  
K.O. Yusuf ◽  
I.B. Sadiku ◽  
O.S. Abioye
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Physicochemical Properties ◽  
Water Samples ◽  
Rainy Season ◽  
Dry Season ◽  
Well Water ◽  
Cadmium Lead ◽  
And Control

This study was conducted to determine the quality of drinking well water near dumpsite at Ogidi-Oloje, Ilorin, Kwara State. Open wells near dumpsite could be polluted due to percolation of chemicals from the decomposition of refuse and scraps of electronic boards having potential of causing diseases to man. Most people at Ogidi-Oloje Ilorin depend on open wells near dumpsite for drinking water during dry season. Water samples were collected from seven open wells (W1 - W6) 9.2 - 18.2 m away from dumpsite and the control well W7 was 45.0 m away from the dumpsite. Physicochemical and bacteriological properties were determined from the water samples during dry season (March, 2019) and rainy season (July, 2019). Phosphate, Cadmium, Lead, Feacal coliform were not detected during dry season but only Feacal coliform was not detected in the water during rainy season. All the values of physicochemical properties of the water were within WHO permissible limits except Iron and Cadmium that above the limits which could cause diseases to mankind. Values of Iron during dry season for six well sources were 3.61, 4.02, 4.26, 3.25, 5.14 and 7.24 mg/L while values for rainy season and control were 0.715, 1.410, 0.650, 0.049, 0.780, 1.110 and 0.775 mg/L(control) but WHO limits is 0.03mg/L. Concentrations of Cadmium in the water during rainy season were 0.010, 0.015, 0.015, 0.020, 0.015, 0.015 and 0.02mg/L(control) but WHO limit is 0.003 mg/L. This study revealed that the water is suitable for consumption during dry season but unsuitable during rainy season. Keywords: well water quality, groundwater pollution, water diseases, dumpsite

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