| Nama Pengarang | : | Istyastono, Enade Perdana |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 99 - 105 |
| Abstraksi Narasi | : | Acetyl salicylic acid (aspirin) has been know as anti - inflamator agent since 1897 and still being until now. The phsicochemistri prope5rties of aspirin have been explored by semiemp[irical quantum- chemical calculation using the computasion chemistry approah. Electronic spektrum of aspirin has been used to determine the best semiempirical method. The MDNO semiempiorical method was found to be the most appropriate method to describle the stukture of aspirin and 4explored its phyicohemistry properties. |
| Nama Pengarang | : | Paken Pandiangan |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 19 - 32 |
| Abstraksi Narasi | : | The solution of partially coherent soliton wave (PCSW) equition for multi soliton has beeen investigated and explored. The PCSW is an solution of the N coupled Nonlinier schrodinger Equition. This PCSW equation has incopherent components in the photo rfractive medium with kerr-like slowly respondin. In this medium the refractive index can be determined by intensity adjustment. The PCSW solution has stable shape and profie during its trevelling and a number of independent parameters in trems of eigenvalues and relative separation. The shape and profile of PCSW that we want basically can be produced by adjusting those parameters. This shape and profile my have asymmateric or symmetric one whit a number of maximum peaks. PCSW also has elasticnteraction, in which the profiles remain stationary, but cause their shape to change afters collision. due to that type of interaction, the PCSW does not radiate diring the process and may have relative position shift between its composing componets. |
| Nama Pengarang | : | Ahmad Zakaria |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 73 - 83 |
| Abstraksi Narasi | : | The aim of this research is to present a comparison between results of 1-D water flow in chanel having movable bed using MATLAB Scrip and HEC - RAS. The methodology of thiss research is comparing calculation resouls of water depthas and water discaharge at ever point along the channel using MATLAB Script and HEC - RAS. The results of this research indicate that MATLAB Script and HEC - RAS have good agreement significantly. the deference between the two calculation result is less that 0.3 %. It is concluded that MATLAB Scrip is reliable enough toi simulate modeling of 1-D flow. |
| Nama Pengarang | : | Sani Susanto, Daniel Siswanto |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 85 - 98 |
| Abstraksi Narasi | : | Aggregate Prodaction Plainning (PPA), as a middle - trem plaining, is one of a namber of steps involved in Production Planning Cuontrol. APP can be analised asa a linear programing model problem. However, the model devewloped ia based pon the fulfilment of a certain assumtion in the relevant costs parameters which requires that all parameters assume certain values. Sunsh an assumtion is often considered as unrealistic. This research modeling and solves the APP in the case where the certain assumtion is violated. Th eappoach used is the fuzzy linier programing model. |
| Nama Pengarang | : | Chatarina Enny Murwaningtyas |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 33 - 38 |
| Abstraksi Narasi | : | the problem of option pricing is to determine the value to be assigned to the option at a given time. The binomial method uses a simple discrete model for the asset price movement. It trurns out that staightforward adaptation of the binomial method can be used to assing valueo the American option. |
| Nama Pengarang | : | Nita Suhartini |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 65 - 72 |
| Abstraksi Narasi | : | This paper report the result opf on investigation of soil erosion retes on a slinghtly slope of cultivated areain Ciawi, Bogor, using 137Cs tekniqwue. The objective of the present study is to evaluate the aplicability of the 137 Cs tecniqui and choose the best conversion model to astimate the erosion/ deposite rate. the top of slope was chose as a referencve site. thee smell cultivated sites were selected, namely landuasde I (15x 25) m2, landuase II(17.5x20) m2, and landuase III (40x50) m2. The erosion/ deposite rate of individual sampling points were estimated using thee models shows that PM, MBM1, and MBM2. A comparison of of the thee modeling shows that PM yields the lowesty value. The MBM1and MBM2 give almost the same values , but MBM2 gives more relieble values because this confersion model considers the time- variant fallout of 137 Cs input and the fate of the freshly deposite fallout befour its incorporation into the plough layer by cultivation. |
| Nama Pengarang | : | D. Setyawan Purwo Handoko |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 9 - 17 |
| Abstraksi Narasi | : | Deskripsi abstrak ringkas tidak tersedia untuk artikel ini. |
| Nama Pengarang | : | Rita Suhadi |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 47 - 56 |
| Abstraksi Narasi | : | A therapy evaluation of hematology disorders on 26 post - chemottherapy woman - cancer cases in hospital X yogyakarta in 2004 has been done. The results showed that the cancer types were breast (66%), ovarium (15%), and cervival(19%); age 41- 50 years (38.46%); stadium 4 (46.15%);and post - chemotherapy complication were nause (42.31), vomiting (30.77%), and anemia, leucopenia, leucocytosis (3.85% each), Anemia therapies were tranfusion plus iron supplement (3 cases), tranfusion only (2), iron suplement only (12), and no treatment (9). All anemioa cases were whithout erythropoietin; prescibed supplement contained no iron (2 cases); leucopenia was whithout therapy (1); leucocytoses were whithout antibiotic (4). but non- leucocytosis receifed antibiotics (1). the outcomes were death (0%), ambulatory treatment (100%), mean (modus) lenght of stay 4.6 (2 and 3) days; upon discharge, leucocytisis recovered (2 cases), worse ( 2), remained bed (1), and without data (21); anemia (6cases), normal (5), almost anemia (3), and whithout data (12). |
| Nama Pengarang | : | Nunung Yuniarti, Agung Endro Nugroho, Lukman Hakim, Enade Perdana lstyastono, Supardjan Amir Margono |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 57 - 63 |
| Abstraksi Narasi | : | Potasium salt of 1,5 -bis (4'-hydroxy- 3'- methoxyphenly) -1,4-pentedien- 3- one,a new drifative of 1,5- bis (4'-hydroxy- 3'- methoxyphenly)-1,4 -pentedien- 3- one has been synthesized. The conpoun's activity as hydroxyl radical scavengerwas examinet using deoxyribose method. The activity was compared to the activities ofsome anti- inflammatory agents, i.e. 1,5 -bis (4'-hydroxy- 3'- methoxyphenly) -1,4-pentedien- 3- one, sodium salf of PGV -0, ascorbic acid diclofenac, and paracematol. The results showed that potasium salf of 1,5 -bis (4'-hydroxy- 3'- methoxyphenly) -1,4-pentedien- 3- one did not have hydroxyl radical scavenger activity. Sodium salf of PGV- 0 and sodium diclofenac, which are anti- inflaamator agents, did not have hhydroxyl radical scavenger activity to.Therefore, if potasium salf of 1,5 -bis (4'-hydroxy- 3'- methoxyphenly) -1,4-pentedien- 3- one has anti - inflamator activity, the machanism wul not be though hydroxyl radical scavening. The anti- inflamatory activity of this compound should be verified by anoyher in vitro test, i.e cyclooxigenase (COX) inhibition test and in viovo method test. |
| Nama Pengarang | : | Rymond J. Rumampuk, Ponis Tarigan |
| Nama Majalah/Jurnal | : | Sigma Jurnal Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 1 - 7 |
| Abstraksi Narasi | : | 16- Dehydopregnenolone acetate (16- DPA) has been converted by beckmann rearrangement into dehydroepiandrosterone (DHEA) in 85% overal. The conversion produck was separated and purified to optain a white crytal m.p 151-.0 - 152.7 c (authentik DHEA at 151.0 -152.7 c). Identification of converted DHEA(2) was done by comparison with the infrared and mass spectra data of authentic DHEA. |
Unduh Dokumen Berkas PDF Utama