| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Visi: Majalah Ilmiah Universitas HKBP Nommensen |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 15-27 |
| Abstraksi Narasi | : | Load flow study is important in p[ower system operation, in order to know the information of powers flows such as real powers and reactive powers and voltages of the network for specified terminal or bus conditions. The solution of load flows and volatges of network for large power system must be done by using computer with Matlab software. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Visi: Majalah Ilmiah Universitas HKBP Nommensen |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 42-56 |
| Abstraksi Narasi | : | The experiment was carried out to observe the effect of gamma irradiation and the length incubation storage time on the quality of nata de coco product. Samples of de coco were treated in high polyethylene plastic (HDPE). For each plastic bag, 100 of cuttings of nata de coco were mixed with 100 ml sugar (20%) and critic acid (0,1%) as prservative solution and then were wrapped and sealed. Each plastic was irradiated at 0,2 and 4 kGy, but 0 kGy. Subsequent treatments were the length storage 0.15 and 30 days. Parameters pH, total microbe, texture (hardness) and organoleptic value as color, flavor taste, aromatic value and tecture. The Result showed that the total microbe on nata de coco iradiated at 4 kGy was 0 cell/g during storage time of 0, 15 and 30 days. Whereas pH, texture, color and organoleptic value (color, aromatic, flavor taste and texture) were adequate compared to treatment at 0 and 2 kGy. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Visi: Majalah Ilmiah Universitas HKBP Nommensen |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 90-105 |
| Abstraksi Narasi | : | This study intends to know the reason of those to choose a scavenger as their individual work, including their income, response to the work even their individual expectation on the municipal government considering the participation in solving municipal sewage related-problem. The results of study showed that economical reason were general ones of someone to be scavenger. Viewed in their income, their initial responses were different when becoming firstly scavengers rather than those in the present time. Where as in the initial, they felt to be forced to do that, however, now their considered it is "suitable" to do. Furthure more, they expected various types of subsidy provided by the municipal government such as money, goods (rice), health and educative facilities of children. In addition, they also expected guidance by the municipal government or related institutions. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Visi: Majalah Ilmiah Universitas HKBP Nommensen |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 65-79 |
| Abstraksi Narasi | : | By the Law number 22 and 25 year 1999, each district is claimed to become autonomy. Since the implementation of those two laws, there was a problem, than a distric unable to finance its expenditure. Particularly this restriction occurs in North Tapanuli District. The objectives if this research were to search informations with whether North Tapanuli District was able to autonomy. Research methodology conducted was to analyze How far local government revenue (PAD), was able to finance its expenditure and How the potential of both direct and indirect tax that were collected by central government during of the 1991-2000. The result showed that based on its fiscal potential that North Tapanuli, is able to beautonomy. That could be shown through the potential of both direct and indirect taxes that were collected by central government were higher than the local revenue. Particularly during period from 1995/1996 to 1997/1998 (compare Table 5 and 11). So that, the central government should revise the tax law, the central government should delegate the authority to manage both direct and indirect tax to the district. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Visi: Majalah Ilmiah Universitas HKBP Nommensen |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 1-14 |
| Abstraksi Narasi | : | Teori kontrol optimal pada dasarnya berfungsi untuk menempatkan pole-pole system lup tertutup ke lokasi yang diinginkan, dan teori ini juga memberikan suatu bentuk informasi terhadap penggunaan energi oleh system yang akan digunakan. Metoda regulator optimal digunakan untuk disain kontroler dengan satu kriteria, yaitu kriteria Indeks ferformasi kuadratik. Pada penelitian ini dilakukan disain regulator optimal pada system motor servo dc yang ada pada laboratorium Dasar Sistem Kontrol dan Komputer UHN agar bekerja dengan respon transien yang cukup baik dan penggunaan energi yang minimum. Perhitungan penguatan Kf yang optimal diperoleh dengan terlebih dahulu menghitung solusi dari persamaan riccati dengan penentuan besar pemboboton Q. Dalam menentukan besar pembobotan tersebut dilakukan dengan metoda regulator optimal dan konvensional. Penggabungan kedua metoda dilakukan dengan prinsip penempatan akar-akar pada daerah-D yang bertujuan melakukan meletakkan seluruh akar-akar sistim lup tertutup pada daerah D yang berjari-jari r dan bertitik pusat di alpha (a). |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Visi: Majalah Ilmiah Universitas HKBP Nommensen |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 57-64 |
| Abstraksi Narasi | : | This experiment was conducted to study the bacterial contamination on goat meat and bowel sold at Jakarta. Parameters measured were total aerob bacteria, coliforms, Staphylococcus bacteria and moulds. The result showed the total number of aerob bacteria in meat were in the range 10^5 - 10^6 cfu/g, while in bowels were in the range 1064 - 10^6 cfu/g. The total coliforms bacteria in meat and bowels were in the range 10^4 - 10^6 cfu/g. The total Staphylococcus bacteria in meat and bowels were in the range 10^3 - 10^5 cfu/g, while the total moulds were in the range 10^3 - 10^5 cfu/g. The total number of aerob bacteria and Staphylococcus were above the permissible limit. No Salmonella was detected in all samples observed residue was found in goat meat and the growth of L.monocytogenes was influenced only by irradiation. |
| Nama Pengarang | : | Y. Sudaryanto, Harsojo, Lydia Andini, Rosalina, Fiktor Sihombing, Sahat P. Siahaan, Marlan Hutahaean, Jongkers Tampubolon, Oloan Simanjuntak, Elvis F. Purba, E. Suwadji, Idrus Kadir, Sinar Terang Sembiring, B. Ricson Simarmata, Lena Ellitan |
| Nama Majalah/Jurnal | : | Visi: Majalah Ilmiah Universitas HKBP Nommensen |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 80-89 |
| Abstraksi Narasi | : | This article analyses the accuracy of profits forecasts contained in prospectuses, and annual reports of companies on the Stock Market Exchanges. The analysis considers companies that produce their forecast annually and those that are newly listing. With that background, numbers of factors affecting profits forecast are examined. Some companies listing on the Stock Exchange report profits bellow their profit forecast while some others report profits well above those predicted in the prospectuses, and annual reports. The accuracy of profit forecasts is measured in several ways. The choice taken depends on the circumstances in particular firms. The author applies a critical approach of the studies earlier done in the same area, and then draws a conclusion based on the literature available. This also a compasses the attempt to align profit forecasts errors as a function of a firm`s specifics characteristics. The author concludes that, underwriter the greater chances of making an accurate profit forecast. It also concluded that, leverageinfluences the level of profits forecast error. Consequently, higher leverage levels enhance the prospect of generating profits forecasts errors. Consequently, higher leverage levels enhance the prospect of generating profits forecast errors. Similarly, size, age, auditor, and interval are individually related to inaccuracies in forecasts. The article maintains that profits forecast errors are good explanatory of premium on listing. Thus premium can predict prejeducies in profit forecasts. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Visi: Majalah Ilmiah Universitas HKBP Nommensen |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 12-23 |
| Abstraksi Narasi | : | Minimal threshold concentration of new pyrazole nitrification inhibitors (Nls), DMPP in comparison to DCD to inhibit nitrification in different soils. In order to determine the minimal threshold concentration of new pyrazole nitrification inhibitors (Nls), DMPP in comparison to DCD to inhibit nitrification in different soils, series of experiments were used. The quantitative determination of ammonium, nitrite and nitrate were carried out spectrophotomerically, and pH of soils determined by applying electrode pH-metric. As references, DMPP and DCD based on recommended rates of 90 kg N ha pangkat -1 corresponding to 0.36 and 10 gama g g pangkat -1 dry soil. In all treatments, the influences of 1, 10, 50, 100, 250 and 500 times of the base concentrations were examined. The effects of these Nls were analyzed by using a standard statistical equation Sigmaplot and Sigmastat programs. The results showed that: On the average up to 180 gama g DMPP g pangkat -1 dry soil was needed for inhibiting the nitrification, completely. The recommended applications rates of 0,5 - 1,5 kg DMPP ha-1 corresponding to 0,36 - 0,50 gama g DMPP g pangkat -1 dry soil were far below the concentration level which inhibited ammonium-oxidation completely in soils. A decrease in the soil pH was observed in all treatments but it was highest in control plots after ammonium fertilization. The effective threshold concentrations of Nls were contantly higher in the clay soil than that of loamy and sandy soil. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Visi: Majalah Ilmiah Universitas HKBP Nommensen |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 24-33 |
| Abstraksi Narasi | : | The aim of this research was to study some methods to release of noni seed dormancy. The research was done at greenhouse of Research Station of Agriculture Faculty of St. Thomas Catholic University, from February until April 2002. The experiment was designed in Randomized Block Design with four replications. Methods tested were seed with pulp, seed without pulp, seed was soaked in water for 24 hours and 48 hours, seed coat was cut at the base of the seed, and the tip of the seed. Observation was conducted every day until 9th weeks after sowing. Noni seed dormancy is imposed by hard seed coat. Hard seed coat is too strong to allow embryo expansion during germination and restricting water and oxygen entry. By cutting seed coat at the base of the seed accelerated germination significantly. By cutting seed coat at the base of the seed increased percentage of germination from 22 until 51 days after sowing. Soaking seed in water for 48 hours increased percentage of germination from 53 until 63 days after sowing. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Visi: Majalah Ilmiah Universitas HKBP Nommensen |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 57-65 |
| Abstraksi Narasi | : | The use of shielding metal are welding to join the carbon steel plates caused the changes on microstructure of the plates around the weld metal and the hence, the change on mechanical properties as well. The change of microstructure can be observed by metallography, and the change of mechanical properties can be examined through mechanical test by using handness and tensile strength. The result showed, that the strength was influenced by heat application during welding process. It was found that the maximum strength of weld joining was 44.2 kg/mm per segi, at current 110 A, voltage 30 V and the welding speed was 10 mms pangkat -1. |
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