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Biodiversitas Fitoplankton di Waduk Selorejo, Kecamatan Ngantang Kabupaten Malang Jawa Timur
Full text linkThe study of the biodiversity of phytoplankton in Selorejo dam was carried out of September 2014. The purpose of the study is to investigate the diversity of phytoplankton in Selorejo Dam. The methods used are drifting method and filtering method. The sample technique was taken once in four stations; two stations on drifting method and the other two stations for filtering method. This study was done with directly observation using binocular microscope in the laboratory of ecology. The data of water was retrieved that the temperature of waters is about 24-26o C, light intensity is 269 lux, the water colours are green and dark brown with pH is 7. The result of study showed there are 4 species are that found from the same division, namely Chlorophyta consisting of Oedogonium sp, Stichococcus sp, Ankistrodesmus sp, and Spirogyra sp. As the eforts to keep the condition of water reservoirs in Selorejo need the handling variety of diversity to sustainability of phytoplankton that be one of bioindicator of waters quality
Pola Protein Sekret Kelenjar Parotoid Tiga Spesies Kodok dan Sekret Kelenjar Kulit Katak Kongkang Racun (Odorrana hosii Boulenger,1891) Melalui SDS-PAGE
Full text linkToads (Phrynoidis aspera, Ingerophrynus biporcatus, Duttaphrynus melanostictus) and poisonous rock-frog (Odorrana hosii) are members of the class Amphibian from different Families. Previously, those three species toads were in the same genus called Bufo, but now they are clustered in a different genus based on the molecular systematic. Proteins secrete from the parotoid and skin glands are one of self-defense mechanisms against to predators. The aims of this study were to determine and compare the protein patterns in secretes from toad parotoid gland and skin gland of poisonous rock-frog. The specimens were obtained from sampling at several different locations according to their habitats. Secrete collections were done by stressing both physically and chemically. Secrete was extracted by the addition of acid and sonication. The secrete protein concentration was measured by the Bradford test, whereas protein patterns were analyzed by SDS-PAGE. The protein concentrations of secrete from toad’s parotoid gland are higher (Phrynoidis aspera 3.50 µg/ml; Duttaphrynus melanostictus 6.7 µg/ml Ingerophrynus biporcatus 1.32 µg/ml) than in skin gland secretion of poisonous rock- frog (1.07 µg/ml). There are 6 protein bands in parotoid gland secretion of Phrynoidis aspera, 5 protein bands in parotoid gland secretion Ingerophrynus biporcatus and 7 protein bands in secrete of Duttaphrynus melanostictus parotoid glands with molecular weight ranges 12.09-172.51 kDa. However, those proteins are different size of molecular weights for each species. Furthermore, two protein bands (with different densities) are founded in skin gland secretion of poisonous rock-frog with molecular weight of 66.17 kDa and 78.73 kDa. The differences of genes, habitats and predators may influence the differences of protein patterns in secrete from toad’s paratoid gland and frog’s skin glands. Those protein patterns could be useful for further studies, especially on Bufo systematic, also for exploring the potential of protein secrete as antibacterial or antifungal
Kadar Total Pigmen Klorofil dan Senyawa Antosianin Ekstrak Kastuba (Euphorbia pulcherrima) Berdasarkan Umur Daun
Full text linkStudies on the content of the pigment chlorophyll and anthocyanin pigments in the leaves of plants kastuba at different levels of development has not been done. The leaves of this plant shows a very noticeable difference in color. At the level of developments in the oldest leaves (bottom) has a dark green color, while at the level of development of the youngest leaves (above) has a deep red color. This indicates that the difference in the color of the leaves with different levels of development shows the different types of pigments. The purpose of this study was to compare the content of the pigment chlorophyll and anthocyanin pigments in leaves kastuba (Euphorbia pulcherrima.) At different levels of development leaves. This research was conducted by the method of extraction and maceration using 70% ethanol. The extract obtained is used to test the color stability during storage for 2 days. After the leaves are extracted with 70% alcohol, chlorophyll content was measured using a spectrophotometer at λ 649 and 665 nm and anthocyanin content was measured using a spectrophotometer at λ 510 and 700 nm. The results showed that there are differences in chlorophyll and anthocyanin content in leaves of different levels of development. Between green leaves and red leaf, the highest levels of chlorophyll pigments in leaves of green, at the level of the first leaf (leaf oldest) and the lowest in the red leaves, at the level of the third leaf (leaves most young ). Levels of anthocyanin compounds in the leaves of different age levels turned out to show different results. Between green leaves and red leaf, the highest levels of anthocyanin compounds in the leaves that are colored green, at the lowest level (the oldest) and the lowest in the leaves red, at the top level (the youngest
Respon Penurunan Konsentrasi Logam Berat Kromium (Cr) dan Pertumbuhan Mikroalga Chlorella vulgaris pada Media Kultur
Full text linkThis study aims to evaluate the response of a decrease in the concentration of Cr in the culture medium and to determine the effect of Cr concentration on the growth of Chlorella vulgaris. This study used a completely randomized design (CRD) with 4 treatments and 3 repetitions. These treatments include, K treatment (control), treatment of Cr 1 (addition of chromium concentration of 1 mg / L), treatment of Cr 3 (addition of chromium concentration of 3 mg / L) and treatment of Cr 5 (addition of chromium concentration of 5 mg / L). Each sample was analyzed by AAS. Analysis of the data is using analysis of variance followed by Duncan test. The results of the analysis of metal concentrations decrease of Cr in the culture medium is Cr 3 (1.2834 mg / l), Cr 1 (0.4360 mg / l), Cr 5 (0.4276 mg / l), and K (0.0126 mg / l). Results of analysis of variance F test showed that Chlorella vulgaris gives highly significant effect on decreasing the concentration of Cd metal. While the results of the growth of Chlorella vulgaris during culture is Cr 3 (909.55 cells / ml), Cr 1 (864.28 cells / ml), Cr 5 (659.20 cells / ml), and K (647.15 cells / ml). Results of analysis of variance showed that different concentrations of Cd metal gives highly significant effect on the growth of Chlorella vulgaris. The conclusion is Chlorella vulgaris has the ability as bioremediator chromium with different concentrations, as shown by the reduction of Cd content in the culture medium. Chlorella vulgaris has a polyamine whose role is to protect or as a protection in a contaminated environment
Pengaruh Pelaksanaan Program Corporate Social Responsibility (CSR) Perusahaan Pabrik Kelapa Sawit terhadap Pengembangan Wilayah di Kabupaten Labuhanbatu Selatan
Full text linkCorporate Social Responsibility Is a concept whereby companies decide to contribute to the community. The term CSR as a corporate social responsibility is still debated.The business world also seems still giddy with the word "responsibility" and the role of the business world with his the CSR is expected in the process of sustainable development in Indonesia. This research uses the Eksplanatoris method to implement a design survey of South Labuhan Batu Regency. Partially variable positive and influential role of Government significantly to implementation of CSR. Partially variable is positive and significant effect of CSR to the development of the region. Partially variable role of Government the positive and significant effect on the development of the region. where Government's role more dominant variables when compared with the variables of CS
Keanekaragaman Makrozoobentos sebagai Bioindikator Kualitas Perairan Ranu Pani-Ranu Regulo di Taman Nasional Bromo Tengger Semeru
Full text linkRanu Pani and Ranu Regulo (2,200 masl) are lakesin Bromo Tengger Semeru National Park (TN.BTS) by area 1 ha and 0.7 5ha. Lakes were used for tourism,agriculture, live stock and fishing spot. Civil and visitors activities give an effect onwater quality. The study was conducted in February-June2011, the aim of study to determine the diversity of macrozoobenthos, to know the water quality by seen thebioindicators and physico-chemical factors. Samples were taken at each of the five observation stations by Ekman Dredge and by hand. Samples were identified and analyzed by Shannon – Winner diversity ('H) and Simpson dominance(D) indices. The results of study in Ranupani were consisted by 93 of Bulimidae, 14 of Hirudidae, 22 of Glossiphoniidae, 1 of Syrphidae, 1 of Gomphidae, 1 of Gammaridae and 3 of Coanagrionidae The results in Ranuregulo were consisted by50 of Coanagrionidae,5 of Asselidae and 5 of Aeshnidae. The diversity indices was higher in RanuPani (0,98) than Ranuregulo (0.57). The dominance in deces was lower in Ranu Pani (0.51) than Ranu Regulo (0.71). Water conditions based on bioindicator in Ranu Pani were classified as medium polluted–polluted.Water conditions in Ranu Regulo were polluted. The condition both ofwatersbased on'H was weight polluted. The analysis ofphysico-chemical factors (based on PP.No.82.year.2001 onWater Quality Standards) for measuringof pH, DO, BOD, COD, nitrate, TSS and TDS showed that the watersin Ranu Pani and Ranu Regulo included to class II and III(except Hatstation IV Ranu Regulo included to class IV and TSS at station II, IV, V waters Ranu Pani feasible for classIII). The Phosphate analysis showed that both of waters included to class III
Pleurotus ostreatus sebagai Nutrisi Pertumbuhan pada Mus musculus
Full text linkPleurotus ostreatus or white oyster mushroom had been produced commercially on an industrial scale as food and supplements. It is because of this oyster mushroom contained nutritions that were nutriceutical benefit. These fungi acted as anti-tumor, lower cholesterol and anti-oxidants. Based on the wealth of information on the nutritions and the many benefits of this white oyster mushroom, we run the research to obtain information related to the potent of oyster mushrooms in mice. So that white oyster mushroom can be used as a potent medicine to heal various diseases. The purpose of this study was to determine the potency of white oyster mushroom as nutrition growth in mice. This study began with the optimization of the white oyster flour making. Mice in dose of 100 mg / KgBW showed the highest body weight compared to other doses. In the body length parameter indicated that the treatment group with dose of 100 mg / KgBW gave an average body longest compared to other groups. This dose also rise the highest feed intake while the group with the least amount of feed intake was in dose of 200 mg / KgBW
Kajian Potensi Vegetasi dalam Konservasi Air dan Tanah di Daerah Aliran Sungai (DAS): Studi Kasus di 3 Sub DAS Bengawan Solo (Keduang, Dengkeng, dan Samin)
Full text linkWatershed is the land area that could potentially be a source of water. The main components of watershed ecosystem composed of humans, animals, vegetation, soil, climate, and water. Watershed ecosystem components that are interconnected is going to maintain the quality of the watershed. A common problem in a watershed is the sedimentation due to large amounts of waste, landslides, and erosion. Water and soil conservation efforts in the watershed can be cultivated by maintaining the balance of watershed ecosystem components one of which is the condition of the vegetation diversity. This study intends to analyze the potential of vegetation in water and soil conservation in the watershed. In-depth study based on the results of the analysis of vegetation and 3 sub-watershed namely Keduang, Dengkeng, and Samin which is a sub-watershed in the Bengawan Solo watershed. Analysis of the condition of the vegetation around the sub-watershed Keduang, Dengkeng, and Samin shows that vegetation has an important role in maintaining the quality of the watershed. Vegetation affects the ability of soil to retain water, thus increasing soil water reserves, prevent erosion and landslides in the surrounding watershed. Vegetation potentially in favor of water and soil conservation in the watershed are shrub vegetation, grass, and other plant floor coverings
Potensi Kearifan Lokal dalam Pembelajaran IPA di SMP
Full text linkMasyarakat telah mengembangkan sistem pengetahuan dan teknologi yang asli sebagai suatu kearifan lokal (indigenous or local knowledge), mencakup berbagai macam cara untuk mengatasi permasalahan kehidupan, seperti pengolahan sumber daya lingkungan. Pengungkapan kearifan lokal melalui pembelajaran IPA memiliki arti penting untuk menguatkan penerapan konsep yang telah dipelajari. Pengintegrasian kearifan lokal yang disesuaikan dengan kebutuhan, diawali dengan melakukan analisis kompetensi dasar IPA. Tujuan dari analisis, untuk menentukan bentuk kearifan lokal yang sesuai dengan konsep yang dipelajari, agar siswa tetap mengkaji konsep secara utuh sedangkan kearifan lokal sebagai suplemen. Hasil penelitian menunjukkan, mahasiswa calon guru memiliki kemampuan mengidentifikasi kearifan lokal sesuai konsep IPA, setelah melakukan wawancara, observasi, dan kajian literatur. Simpulan dari penelitian ini, untuk melatih keterampilan ilmiah mahasiswa dalam mengintegrasikan konsep IPA dengan kearifan lokal, diterapkan tiga metode pengungkapan kearifan lokal di masyarakat, terbukti dapat saling melengkapi informasi yang diperoleh
Pengaruh Variasi Herbal terhadap Organ dalam Broiler
Full text linkThis research assessing the influence of various herbs on internal organs broiler . This study using random complete the design, with four replication. Treatment of this research is P0 (Control , commercial feed without additional herbs), P1 (Commercial feed + Herbs of the tongue crocodiles), P1 (Commercial feed + noni), and P3 (Commercial feed + ginger). The subject of research is doc who are being guarded broiler after hatching, until age five weeks, then taken data research. Parameters taken on this research is body weight , the weight of the liver, the heart, gizzard, the intestines, and spleen. This research result indicates , there is a significant difference variations due to the provision of herbs on body weight and weights broiler liver ( p < 0.05), but there is no difference on empedal, the heart, the intestines, and spleen ( p >0.05 )