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Jurnal Ilmu Dasar
Published by Universitas Jember
ISSN : 24425613     EISSN : -     DOI : https://doi.org/10.19184/jid.v24i2.36657
Core Subject : Education, Engineering,
Control & Systems Engineering Mathematics
Jurnal ILMU DASAR (JID) is a national peer-reviewed and open access journal that publishes research papers encompasses all aspects of natural sciences including Mathematics, Physics, Chemistry and Biology. JID publishes 2 issues in 1 volume per year. First published, volume 1 issue 1, in January 2000 and avalaible in electronically since 2012 with ISSN 1411-5735 (Print) and avalaible in electronically since 2012 with ISSN 2442-5613 (online). Jurnal ILMU DASAR is accredited SINTA 3 by the Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia (Kemendibukristek) No. 152/E/KPT/2023 (September 25, 2023), Ministry of Research, Technology and Higher Education of the Republic of Indonesia (RISTEKDIKTI), No. 200/M/KPT/2020 (December. 23, 2020). All accepted manuscripts will be published worldwide JID has been indexed in DOAJ, Dimension, OCLC WorldCat, PKP Index, Crossref, Google Scholar, Base, Garuda, and OneSearch. JID have been collaborated in KOBI-ID (Konsorsium Biologi Indonesia) and HKI (Himpunan Kimia Indonesia) since 2017.
Arjuna Subject : Matematika - Kontrol dan Optimasi
Articles 13 Documents
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Search results for , issue "Vol 12 No 2 (2011)" : 13 Documents clear
On τ [M ]-Cohereditary Modules S Suprapto; Sri Wahyuni; Indah Emilia Wijayanti; I Irawati
Jurnal ILMU DASAR Vol 12 No 2 (2011)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

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Abstract

Let R be a ring with unity and N a left R-module. Then N is said linearly independent to R (or N is R-linearly independent) if there exists a monomorphism φ : R(Λ) → N . We can define a generalization of linearly independency relative to an R-module M. N is called M-linearly independent if there exists a monomorphism φ:M(Λ) →N. Amodule  iscalled M-sublinearly independentif  is a factormodule of a module which is M-linearly independent. The set of M-sublinearly independent modules is denoted by τ [M ]. It is easy to see that τ [M ] is subcategory of category R-Mod. Furthermore, any submodule, factor module and external direct sum of module in τ [M ] are also in τ [M ]. A module is called τ [M ]-injective if it is P-injective, for all modules P in τ [M ]. Q is called τ [M ]-cohereditary if Q ∈τ [M ] and any factor module of Q is τ [M ]-injective. In this paper, we study the characterization of category τ [M ]-cohereditary modules. For any Q in τ [M ], Q is a τ [M ]-cohereditary if and only if every submodule of Q-projective module in τ [M ] is Q-projective. Moreover, Q is a τ [M ]-cohereditary if and only if every factor module of Q is a direct summand of module which contains this factor module. Also, we obtain some cohereditary properties of category τ [M ]. There are: for any R-modules P, Q. If Q is P-injective and every submodule of P is Q-projective, then Q is cohereditary (1); if P is Q-projective and Q is cohereditary, then every submodule of P is Q-projective (2); a direct product of modules which τ [M ]-cohereditary is τ [M ]-cohereditary (3). The cohereditary characterization and properties of category τ [M ] above is truly dual of characterization and properties of category τ [M ].
Regeneration of Cocoa Zygotic Embryo Using Kinetin in B5 Media Sholeh Avivi
Jurnal ILMU DASAR Vol 12 No 2 (2011)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

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Abstract

The objective of this research was intended to identify the influence of kinetin application on zygotic embryo regeneration of several cocoa plants and examine the most appropriate kinetin concentration for regeneration of several cocoa clones. This research was conducted at Laboratory of Plant Tissue Culture, Agronomy Department, Faculty of Agriculture,Jember University. The research was designed by Completely Randomized Factorial Design within four replications. The first factor was 4 cocoa clones which consisted of DR 1, DR 2, ICS13 and ICS60.The second factor was 5 methods of zygotic embryo regeneration. Result showed that the best response of cocoa clone to kinetin concentration of all examined parameters was shown by DR 1 clone. Morever, on initiation stage, the most appropriate kinetin concentration for regeneration of several cocoa clones was 2 ppm.
Application of Ionic Liquids ss Reaction Media for The Xylanase Reaction Ika Oktavianawati
Jurnal ILMU DASAR Vol 12 No 2 (2011)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

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Abstract

The potential for performing Thermomyces lanuginosus xylanase-catalyzed reactions on birchwood xylan dissolved in a range of ionic liquids has been investigated. As apparent from the results, some of the selected hydrophobic ionic liquids performed as better facilitators of the hydrolysis reactions than the hydrophilic ones. Thus, the xylanase reaction profiles in these hydrophobic ionic liquids, including [Py1,4]tfsa, [C4MIm]PF6, [P6,6,6,14]BF4, [P6,6,6,14]dca, [P6,6,6,14]bisphosphinate, and [C1MIm]MeSO4, were investigated in greater detail and the conditions for optimum temperature, optimum pH, and kinetic parameters documented. [P6,6,6,14]bisphosphinate was found to be the best ionic liquid producing the highest xylanase activity (84.98 unit/mg protein) at high temperature and pH, namely at 85°C and pH 9.0, respectively, among all of the ionic liquids tested. In addition, this ionic liquid increases the specificity of the xylanase toward xylan, indicated by lower KM (6.42 mg/mL), though it does not observed well on its enzyme’s enhancement rate. Therefore, this study indicates that the application of this ionic liquid for the hydrolysis of real lignocellulosic samples, such as wood pulp, is warranted. Further investigations, outside the scope of this research will be required to validate these observations.

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