103 research outputs found

    Keanekaragaman Arthropoda Pada Pertanaman Kakao (Theobroma Cacao L.) Di Kecamatan Palolo Kabupaten Sigi

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    Penelitian ini bertujuan untuk mengetahui keanekaragaman Arthropoda pada pertanaman Kakao pada bagian tajuk (Sweep net) dan permukaan tanah (pitfall trap). Penelitian dilaksanakan pada pertanaman kakao. di Desa Sejahtera, Kecamatan Palolo, Kabupaten Sigi dan kegiatan identifikasi Arthropoda dilaksanakan di Laboratorium Hama dan Penyakit Tumbuhan, Fakultas Pertanian Universitas Tadulako. Penelitian menggunakan metode purposive sampling atau ditentukan secara sengaja, dilakukan pada lahan seluas 1 Ha yang dibagi dalam 5 hamparan pertanaman yang dijadikan pengamatan, dengan total 25 perangkap, dilakukan setiap 7 hari sekali, pengamatan selama 3 kali. Pengambilan sampel dilakukan dengan menggunakan jaring serangga dan perangkap jebakan. Hasil penelitian menunjukkan bahwa terdapat 11 ordo yang terdiri dari 21 famili dan 307 populasi untuk arthropoda tajuk (Sweep net) sedangkan arthropoda permukan tanah terdapat 5 ordo yang terdiri dari 6 famili dan 871 populasi.Analisis indeks keragaman menunjukkan bahwa pengamatan arthropoda tajuk berpengaruh terhadap keanekaragaman (H'), kemelimpahan (N1), kemelimpahan populasi sangat melimpah (N2), sedangkan pada pengamatan arthropoda tanah tidak berpengaruh, disebabkan oleh faktor habitat dan rantai makanan, sehingga jumlah ordo, populasi lebih sedikit

    Effects of nitrification inhibitor with organic manure and urea on protein and mineral contents in grain of Oryza sativa cv. MR219 cultivated in acid sulphate soil

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    Several approaches to improve grain nutritive values involve in increasing seed accumulation of protein and micronutrients in rice. Therefore, a study was conducted to select a suitable combination of dicyandiamide (DCD) with organic manure (OM) and urea to improve protein and mineral content in rice grain of MR219. The protein (9.07-12.50%) and Ca, Mg, Zn, Cu, Fe and Mn concentrations increased from 1.92 to 21.05, 3.56 to 18.25, 2.25 to 20.22, 9.14 to 25.66, 3.34 to 27.20 and 5.17 to 23.86%, respectively due to the application of DCD with urea and OM. Moreover, the highest content of protein in grain was obtained for the application of DCD with urea and oil palm compost (OPC). Iron and Mn contents were also highest for DCD with urea and OPC, but Ca, Mg, Zn and Cu contents were highest for DCD with urea and poultry dung (PD) and kept similarity with DCD with urea and OPC

    Evaluation of residential grid-connected photovoltaic system as the potential energy source in Malaysia

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    Application of solar energy in Malaysia has been started in 1998. This country has a large potential of solar energy due to its location at equatorial region. The current energy consumption and demand in Malaysia is describes in this paper. The potential of solar energy in Malaysia is described together with the suitable photovoltaic construction. It also explains the plans conducted by Malaysia involving solar energy that covers investments and also projects involved such as Malaysia Building Integrated Photovoltaic (MBIPV). Simulation of grid-connected photovoltaic system in this study is performed using HOMER software. Finally, the potential of having a grid-connected PV system in a residential area is analyzed. The positive and negative findings in terms of cost and suitability of the system are explained

    Potential of Residential Grid-Connected Photovoltaic System as the Future Energy Source in Malaysia

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    Malaysia has started the implementation of solarenergy harvesting in 1998. Located at equatorial region, Malaysia hasa large potential for solar energy. This paper examines the currentenergy consumption and demand in Malaysia. The potential of solarenergy harvesting in Malaysia is described together with the suitablephotovoltaic construction. It also explains the plans conducted byMalaysia involving solar energy that covers investments and alsoprojects involved such as Malaysia Building Integrated Photovoltaic(MBIPV). Finally, this paper analyses the potential of having a gridconnectedPV system in a residential area. The positive and negativefindings in terms of cost and suitability of the system are explaine

    Total nucleated cell count and CD34+ cell is reduced in preeclampsia and gestational diabetes mellitus pregnancies: viable affix criteria for cord blood banking

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    The aim of this study to determine the numbers of CD34+ cells and total nucleated cell (TNC) in umbilical cord blood (UCB) collected from pregnant mothers with gestational diabetes mellitus (GDM) and preeclampsia (PE), following statistical analysis of both maternal and perinatal factors which affect UCB parameters. Most of studies explored the influence of obstetric factors on the number of UCB cell collection and only a few looked at the effects on UCB haematopoietic stem cell (UCB-HSC) of common disorders complicating pregnancy. A total of 112 UCB samples (32 PE, 42 GDM and 38 non-diseased) were collected. CD34+ cell and NC count were enumerated using FACS Calibur. The TNC and CD34+ cells were significantly reduced in both PE and GDM groups as compared to the control group. The PE group shows significantly lower birth weight and higher BP which led to a lower UCB volume and CD34+ count. Gestational age shows significant correlation with nucleated cell count (NCC) and TNC. GDM group shows significantly lower systolic BP, NCC and TNC count, including low placental weight and birth weight. Conclusively, some obstetrics factors have significant influences to the numbers and quality of UCB-HSC in both PE and GDM groups, which could guide in the selection criteria for CB banking

    Rubber-Tree Leaf Diseases Mapping Using Close Range Remote Sensing Images

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     Currently, close-range remote sensing method using drone-based platform which payload compact sensor has been used for monitoring and mapping in the agriculture sector at large area. Thus, this study is deployed drone with a compact sensor to identify the rubber tree leaf diseases based on two groups of a spectral wavelength which are visible (RGB: 0.4 µm – 0.7 µm) and near infrared (NIR: 0.7µm – 2.0 µm), respectively. Spectral obtained from drone-based platform will be validated using ground observation handheld spectroradiometer. Eight types of rubber tree clones leaf at three different conditions (healthy, unhealthy and severe) were randomly selected within the 9.4-hectare Experimental Rubber Plot, Rubber Research Institute of Malaysia (RRIM), Kota Tinggi, Johor whereby consist RRIM 2000 series, RRIM 3000 series, and PB series, respectively. Based on the result, quantitative analysis shows that the f-value is smaller than Critical-one tail for healthy, unhealthy while for severe the f-value is larger than Critical-one tail. The f-value is 2.887 < 4.283 (healthy), 0.002 < 0.264 (unhealthy) and 1.008 > 0.0526, respectively. Thus, this can be concluded that spectral and estimate is equal at the 0.05 significant levels. For qualitative analysis, it shows that each rubber clone tree diseases can be distinguished at the near infrared band for healthy, unhealthy and severe respectively

    Rubber-Tree Leaf Diseases Mapping Using Close Range Remote Sensing Images

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     Currently, close-range remote sensing method using drone-based platform which payload compact sensor has been used for monitoring and mapping in the agriculture sector at large area. Thus, this study is deployed drone with a compact sensor to identify the rubber tree leaf diseases based on two groups of a spectral wavelength which are visible (RGB: 0.4 µm – 0.7 µm) and near infrared (NIR: 0.7µm – 2.0 µm), respectively. Spectral obtained from drone-based platform will be validated using ground observation handheld spectroradiometer. Eight types of rubber tree clones leaf at three different conditions (healthy, unhealthy and severe) were randomly selected within the 9.4-hectare Experimental Rubber Plot, Rubber Research Institute of Malaysia (RRIM), Kota Tinggi, Johor whereby consist RRIM 2000 series, RRIM 3000 series, and PB series, respectively. Based on the result, quantitative analysis shows that the f-value is smaller than Critical-one tail for healthy, unhealthy while for severe the f-value is larger than Critical-one tail. The f-value is 2.887 < 4.283 (healthy), 0.002 < 0.264 (unhealthy) and 1.008 > 0.0526, respectively. Thus, this can be concluded that spectral and estimate is equal at the 0.05 significant levels. For qualitative analysis, it shows that each rubber clone tree diseases can be distinguished at the near infrared band for healthy, unhealthy and severe respectively

    Cadmium availability and uptake by rice from lime, cow-dung and poultry manure amended Ca-contaminated paddy soil

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    Industrial wastes and effluents are being discharged directly to soils, canals and rivers, which may contain a lot of toxic heavy metals like cadmium (Cd). Thus, the polluted soils need to be amended for crop production. With this idea in mind,pot experiments were conducted at Bangladesh Agricultural University to examine the effect of organic and inorganic amendments on growth, yield and Cd concentrations in rice grown in polluted soils. The addition of cow-dung (CD), poultry manure(PM) and lime significantly increased the grain and straw yields of rice, reduced Cd concentration and uptake of Cd in grain and straw compared with control. However, the addition of PM increased more rice yields, reduced more Cd concentration and uptake and decrease the heavy metal phytoavailability

    Investigation of Low-Pressure Bimetallic Cobalt-Iron Catalyst-Grown Multiwalled Carbon Nanotubes and Their Electrical Properties

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    A bimetallic cobalt-iron catalyst was utilized to demonstrate the growth of multiwalled carbon nanotubes (CNTs) at low gas pressure through thermal chemical vapor deposition. The characteristics of multiwalled CNTs were investigated based on the effects of catalyst thickness and gas pressure variation. The results revealed that the average diameter of nanotubes increased with increasing catalyst thickness, which can be correlated to the increase in particle size. The growth rate of the nanotubes also increased significantly by ~2.5 times with further increment of gas pressure from 0.5 Torr to 1.0 Torr. Rapid growth rate of nanotubes was observed at a catalyst thickness of 6 nm, but it decreased with the increase in catalyst thickness. The higher composition of 50% cobalt in the cobalt-iron catalyst showed improvement in the growth rate of nanotubes and the quality of nanotube structures compared with that of 20% cobalt. For the electrical properties, the measured sheet resistance decreased with the increase in the height of nanotubes because of higher growth rate. This behavior is likely due to the larger contact area of nanotubes, which improved electron hopping from one localized tube to another

    Recurrent vaginal prolapse in a postpartum river buffalo and its management

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    This article presents a case report based on a river buffalo cow with a history of recurrent vaginal prolapse following a normal parturition. After clinical examination, the buffalo was diagnosed with first grade vaginal prolapse. Following administration of epidural anesthesia (Lidocaine), the area of vulva was aseptically prepared and a modified boot-lace retention suture was applied using nylon tape to prevent recurrence of the prolapse. Because of a foul smell lochia detected and for prevention of further contamination, antibiotic was administered. The buffalo was also treated with anti-inflammatory drug and drugs useful to help muscle tonicity and retention of reproductive organs in place. Two weeks later suture was removed and the animal recovered successfully with no recurrence reported after that. Though vaginal prolapse in buffalo has been reported to be most common during last trimester of pregnancy or associated with dystocia, the present case shows that it can also occur following normal parturition
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