1,143 research outputs found
Six years of study on fast growing forest plantations catchments in the Northwest of Spain
Data on water balance in three fast growing forest plantations experimental catchments in the northwest of Spain are presented. Two watersheds are covered by Eucalyptus globulus and other is covered by Pinus pinaster. During the six years of study severa1 perturbations occurred. In 1989 two consecutives wildfires affected to one E. globulus watershed. The second fire also bumed the other eucalyptus watershed. All eucalyptus were felled since 1991 to 1992. Also 25% of the watershed area in the pine catchment was cutted in 1991. Quick changes in the hydrologycal regimen took place after these perturbations. The very fast recovering capacity after fire and cutting of Eucalyptus globulus facilitated the retum to pre-fire hydrologic parameter values within only a few years. Before perturbations occurred, nutrient balances were very conservative, and were similar among the cathments. This indicates a good performance on the part of both tree plantations. Water comsumption for pine and eucalyptus stands was very similar
Model Kebijakan Modal Kerja Pada UMKM Di Desa Wisata “Cengek” Tingkir Lor, Salatiga
Penelitian ini bertujuan untuk mengetahui model kebijakan modal kerja yang digunakan oleh Usaha Mikro, Kecil dan Menengah (UMKM) di Desa Wisata "Cengek" Tingkir Lor, Salatiga.Metode penelitian dalam penelitian ini menggunakan analisis deskriptif kuantitatif dan teknik pengambilan sampel dengan observasi dan wawancara. Metode pemilihan sampel yang digunakan adalah purposive sampling dengan sampel sebanyak 20 UMKM. Hasil penelitian menunjukkan bahwa 70% pengusaha UKM di Desa Wisata "Cengek" Tingkir Lor, Salatiga menggunakan kebijakan modal kerja yang moderat, 15% menggunakan kebijakan modal kerja konservatif dan sisanya 15% menggunakan kebijakan agresif. Rekomendasi dari hasil penelitian ini adalah (1) pengusaha UKM mulai membawa investor sebagai pemodal dengan perhitungan bisnis yang disepakati (2) pengusaha UKM yang menggunakan kebijakan modal kerja konservatif harus berani menggunakan dana eksterna
Studi Habitat Peneluran Penyu Hijau (Chelonia Mydas) Di Pantai Pangumbahan Sukabumi Jawa Barat
All sorts of turtle have registered in the list of Apendik I CITES (Convention on International Trade of Endangered Spesies). The convention forbid the International trade of all products/result of turtle: neither the egg, meat or caravas.The purpose of this research is to know the nesting of Green Turtle (Chelonia mydas) reviewed from the physical aspect and biology of Pangumbahan Beach, Sukabumi , West Java. The research was did on January 5th-7th 2011. The method that used is Descriptive Exploratory Method. The research material that used is Green Turtle (Chelonia mydas), the nesting of turtle that include the outside vegetation, predator, the long and wide of beach, the temperature, the slope of beach, the moisture of substrate, and the composition of sand. There is 6 station based on Association of The Green Turtle Cultivation. Data collection was did by direct observation in locates. Based on the research result, the Green turtle (Chelonia mydas) in Pangumbahan Beach achieve 19. The width of Pangumbahan Beach is about 72 - 92 m and the length is about 3000 m. The slope of the beach is about 2.4% - 2.8%. The measured result of the sand temperature is about 28 ˚C - 29.3 ˚C. The composition moisture of surface sediments is about 0.05% - 1.13%, and the moisture inside sediments (50cm) about 0.26% - 4.1%. The sand particle of Pangumbahan Beach is dominated by the medium sand with percentage in each more than 25%. The vegetation that dominate is Pandanus (Pandanus tectorius), meanwhile kind of predators that find in the locate are Wild Dogs (Canis lupus), Red Ants (Oechophylla smaragdina), Crab (Ocypoda sp)
Analisis Residu Pestisida Organofosfat Di Perairan Mlonggo Kabupaten Jepara
Perairan Mlonggo merupakan kawasan perairan teluk yang terletak di Kabupaten Jepara. Bidang pertanian merupakan salah satu aktivitas yang dilakukan oleh masyarakat di kawasan ini. Petani banyak menggunakan pestisida jenis organofosfat karena dianggap paling efektif membunuh hama dan mudah diperoleh di pasaran. Organofosfat mempunyai sifat racun dan kurang persisten di alam. Penggunaan organofosfat yang berlebihan dan terus menerus dapat mencemari lingkungan. Tujuan penelitian ini adalah untuk mengetahui konsentrasi residu pestisida organofosfat di Perairan Mlonggo Kabupaten Jepara. Metode penelitian yang digunakan adalah deskriptif kuantitatif, sedangkan lokasi penelitian ditentukan dengan metode purposif. Analisis pestisida organofosfat dalam sampel air laut yang diambil dari lima stasiun menggunakan alat kromatografi gas. pH, suhu, DO, salinitas dan data arus digunakan sebagai data pendukung yang diambil secara insitu. Hasil penelitian menunjukkan residu pestisida organofosfat yang terdeteksi adalah klorpirifos dengan konsentrasi dari stasiun 1 sampai 5 berturut-turut adalah 0,0027; 0,0028; 0,0024; 0,0023 dan 0,0020 ppm. Profenofos, diazinon, fenitotrion, malation, metidation, dan paration di bawah batas deteksi alat
Assessment of anti bacterial, anti inflammation and wound healing activity in Wistar albino rats using green silver nanoparticles synthesized from Tagetes erecta leaves
Silver nanoparticles synthesized from plant material have superior bioactivities. The purpose of this current study was to synthesis, characterize and to explore the bioactive efficacy of silver nanoparticles (Ag-NPs) using aqueous leaf extract of Tageteserecta. The biosynthesized Ag-NPs were characterized using ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction and Scanning electron microscopy. Ag-NPs were studied for in-vivo anti-inflammatory and wound healing activities performed in female Wistar albino rats. UV –Vis absorption spectrum of the T.erecta leaves extract was obtained at 428nm due to excitation of surface plasmon vibration in nanoparticles and confirms the synthesis of silver nanoparticles. The FTIR analysis showed the presence of sulfate, alkene and alcohol in the AgNP of T.erectaleaves. The average crystallite size of AgNP synthesized was found to be 27.2 nm. The spherical silver grain of 15.5 nm average size has been depicted with high-resolution scanning electron microscopy. Maximum activity (15mm) of T.erecta leaves silver nanoparticles was observed against Salmonella typhi (15mm) followed by Escherichia coli (12mm). Ag-NPs exhibited significant wound healing activity and anti-inflammatory activity in carrageenan-induced paw volume tests performed in female Wistar albino rats. Colloidal Ag-NPs can be synthesized by simple, nonhazardous methods, and biosynthesized Ag-NPs using T.erectaleaves extract have significant therapeutic properties.This work evidently confirmed that silver nanoparticles mediated T.erecta could be considered as a potential source for anti-inflammatory and wound healing drug
Bioremediation of Chlorpyrifos Contaminated Soil by Microorganism
India is agricultural based country where 70% of the population survives on it. In order to increase the production of field various pesticides are used. Chlorpyrifos (O,O-diethyl O-3,5,6-trichloro-2-pyridyl phosphorothioate) is an organophosphate pesticide which is widely used as insecticide for crop protection. But due to its persistent nature into the environment, it is leading to various hazards including neurotoxic effects, cardiovascular diseases and respiratory diseases. Bioremediation is a technology to eliminate chlorpyrifos efficiently from the environment. In bioremediation of chlorpyrifos the potential degradative microorganisms possess opd (organophosphate degrading) gene which hydrolyses the chlorpyrifos and utilizes it as a sole carbon source.Thus the present review discusses about how through bioremediation the pesticide chlorpyrifos can be degraded using potential soil microorganisms
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