Edi Wibowo
Program Studi Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro
Articles
9
Documents
Ekstrak Daun Mangrove Aegiceras corniculatum Sebagai Antibakteri Vibrio harveyi dan Vibrio parahaemolyticus

ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 4 (2004): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Pada dekade terakhir, pencarian senyawa bioaktif baru dari alam dilakukan sangat intensif. Aegiceras corniculatum merupakan salah satu spesies mangrove yang telah diketahui berpotensi sebagai sumbersenyawa anti bakteri. Penelitian ini bertujuan untuk mengetahui potensi daun mangrove Aegiceras corniculatum sebagai sumber bahan bioaktif anti bakteri Vibrio harveyi dan Vibrio parahaemolyticus. Padapenelitian Aegiceras corniculatum diambil dari pantai Teluk Awur, Jepara. Sampel diekstrak dengan metanol. Uji anti bakteri terhadap Vibrio harveyi dan Vibrio parhaemolyticus dilakukan dengan metode difusi agardengan konsentrasi 5000, 10.000, dan 20.000 ppm dengan pelarut aquades. Hasil penelitian menunjukkan bahwa ekstrak daun A. corniculatum mampu menghambat V. parahaemolyticus pada semua konsentrasi dengan zona hambatan 0,275-0,55 mm. Namun ekstrak ini tidak menunjukan daya hambat terhadap laju pertumbuhan bakteri V. harveyi.Kata kunci : Aegiceras corniculatum, Bioaktif, Antibakteri, Vibrio harveyi, Vibrio parahaemolyticusExploration of new bioactive compounds from nature has been conducted intensively In the last decade. Aegiceras corniculatum, is one of mangrove species which has potent as a source of antibacterial compounds.The aim of this research is to investigate the potency of Aegiceras corniculatum leaves as a sorce of anti bacterial Vibrio harveyi and Vibrio parahaemolyticus substances. Leaves of Aegiceras corniculatum wascollected from Teluk Awur Jepara. Experimental laboratories method was used in this research, while data was analyzed descriptively. Sample was extracted by using methanol. Agar Diffusion method was utilizedon anti bacterial test against Vibrio harveyi and Vibrio parahaemolyticus with concentration 5.000, 10.000 and 20.000 ppm in aquadest. The result of the test showed that Aegiceras corniculatum leaves extractinhibit the growth of the V. parahaemolyticus with inhibtion zone between 0,275-0,55 mm, but not active against Vibrio harveyi.Key words : Aegiceras corniculatum, bioactive, antibacteria, Vibrio harveyi, Vibrio parahaemolyticus

Kandungan Klorofil-a pada Diatome Epipelik di Sedimen Ekosistem Mangrove

ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 4 (2004): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Diatom Epipelik memiliki arti penting dalam sedimen mangrove karena merupakan komponen utama mikroalga yang mengandung klorofil, sehingga klorofil dalam sedimen akan mempengaruhi produktivitas primernya. Nilai kandungan klorofil -a dalam sedimen di kedalaman 2 cm berkisar antara 0,125 - 0,405 μg/cm3 menunjukkan bahwa pada kedalaman 2 cm mempunyai kandungan klorofil -a tertinggi bila dibandingkan pada kedalaman sampling 4 cm ataupun 6 cm. Untuk parameter fisika - kimia oseanografi, kondisi lingkungan memiliki kecenderungan yang normal.Kata kunci : klorofil -a, sedimen mangrove, produktivitas primer.The result showed that Epipelic Diatom have an important role in mangrove sediment, since they are known as major component of microalgae which containt chlorophy. These chlorophyll influence the level of primary productivity, within the sediment. The highest chloropyll a content within sediment was found in those taken from 2 cm deep range, compared with those taken from 4 cm and 6 cm deep.Key words : Chlorophyll -a, mangrove sediment, primary productivity.

Stimulasi Fission Pada Reproduksi Aseksual Teripang Holothuria atra

Journal of Marine Research Vol 2, No 1 (2013): Journal of Marine Research
Publisher : Journal of Marine Research

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Abstract

The production of sea cucumber in the wild has declined, it is due to excessive use and arrests for cultivation without any effort. Sea cucumber are generally reproduce sexually and asexually. Sexual reproduction through spawning and gametogenesis while, asexual reproduction through fission. Fission is the process of splitting a part of the specimen anterior, middle and posterior to the cucumber. The third part will grow into a new individual after each able to regenerate the missing parts of the specimen. Fission on sea cucumber can be stimulated by binding on the body of sea cucumber. The research was conducted in April-July 2012 in Bandengan, Jepara in order to objectives determine the success rate of asexual reproduction and regeneration rate and survival rate in sea cucumber Holothuria atra fission yield. The method used was experimental research in the field. The results of this study indicate the success rate of asexual reproduction in the sea cucumber H. atra fission yield was higher in H. atra large groups with a fission plane. At this stage of the regeneration of the posterior H. atra large groups with a fission plane is the most rapid in the middle regenerate regenerate while the slowest. Highest survival rate found in H. atra large groups with a fission plane, especially in the posterior.. Totality, post stimulated sea cucumber by fission would processing fission, wound closing process, regeneration process will form a mouth and new anus.

Studi Komposisi Isi Lambung Dan Kondisi Morfometri Untuk Mengetahui Kebiasaan Makan Ikan Manyung (Arius thalassinus) Yang Diperoleh Di Wilayah Semarang

Journal of Marine Research Vol 2, No 1 (2013): Journal of Marine Research
Publisher : Journal of Marine Research

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Abstract

Manyung fish (Arius thalassinus) is one of the bottom fish (demersal), which has significant economic potential. One of the measures that can be done to preserve the habitat of fish manyung is a rational exploitation. Information on the biological aspects can be provide additional information on the food and feeding habits and the condition of fish manyung morphometry, to gain a better understanding on the survival and growth of fish. The study was conducted to examine the contents of the stomach and the type of food eaten and the condition of morphometry of manyung fish were caught from the waters around Semarang, manyung fish samples obtained from collectors of Semarang in the krobokan. Manyung fish samples taken on July, August, September and October 2011, with total sample of 50 fish. Retrieval of data in this study conducted in the field and in the laboratory by measuring the weight, total length of fish, fish food organisms manyung frequency, and calculate the volume food organisms of fish manyung. Manyung major food fish (Arius thalassinus) by his preponderance index is a kind of fish with a value of 28.7%. Base of composition of stomach contents, types of mouth (sub terminal), the presence of tentacle, and the length of intestines (1,7-2 times length of the body ) can be concluded manyung fish (Arius thalassinus) is omnivores which tend to be carnivores. The results of 50 samples Manyung fish (Arius thalassinus) gained the most long range artifacts in the interval 55-61 cm (23 fish), weight range for most numerous in the interval 1.6 to 2.7 kg (30 fish).

Pengaruh Pemberian Udang Ebi Dengan Konsentrasi Yang Berbeda Terhadap Pertumbuhan Tukik Penyu Lekang (Lepidochelys olivacea) Di Pantai Samas, Bantul

Journal of Marine Research Vol 1, No 2 (2012): Journal of Marine Research
Publisher : Journal of Marine Research

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Abstract

Turtle is an organism that spends his life at sea and be able to migrate long distances along the Indian Ocean, Pacific Ocean and Southeast Asia. The presence of turtles in Indonesia are increasingly threatened with extinction, both natural and human activities that lead to the existence of the endangered sea turtles. The purpose of this study was to determine the effect of giving different feed concentrations on the growth of hatcling olive ridley turtle (Lepidochelys olivacea) The age of 2 weeks during the treatment period of 10 weeks. Data is collected from 21 August to 30 October 2010 using the experimental method. The study was conducted at Samas beach Yogyakarta. Feed given in the form of shrimp ebi 3% and 8% of the weight of biomass. The number of hatchlings that are used are 12 tails that are placed in six containers. Measurement of growth of weight, length and width of hatchlings carried out once every 2 weeks for 10 weeks of observation. The results of the study indicate that the hatchlings fed shrimp ebi with a concentration of 3% have a specific growth rate on average 0366 ± 0008 is smaller than hatchlings fed with a concentration of 8% on average 0425 ± 0006. The results of data analysis using the specific growth rate of the test statistic t with feeding treatment with different concentrations showed that the sig. (2-tailed) = 0.000 or p <0.05. So it can be proved that the specific growth rate in both treatments were significantly different.

PEMBERDAYAAN USAHA KECIL MENENGAH DAN KOPERASI SEBAGAI PENGGERAK PERTUMBUHAN EKONOMI

Ekonomi dan Kewirausahaan Vol 11, No 1 (2011): Ekonomi dan Kewirausahaan
Publisher : Ekonomi dan Kewirausahaan

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Abstract

ABSTRACT Micro, Small and Medium Enterprises (SMEs) are the largest group of economic actors in the Indonesian economy and proved to be the national economic safety valve in times of crisis, as well as being dynamist economic growth after economic crisis. Besides being the largest business sector contribution to national development, SMEs are also creating substantial employment opportunities for workers in the country, so it is helping to reduce unemployment. One key to the success of micro, small and medium enterprises is the availability of a clear market for the products of SMEs. Meanwhile, the fundamental weaknesses faced by SMEs in the field of marketing is a low market orientation, weak in a complex and sharp competition and inadequate marketing infrastructure. Faced with an increasingly open market mechanisms and competitive, market control is a prerequisite to improve competitiveness. Therefore, the role of government is needed in encouraging the success of SMEs to expand market access. Keywords: empowerment, micro small and medium enterprises, economic growth  

IMPLEMENTASI GOOD CORPORATE GOVERNANCE DI INDONESIA

Ekonomi dan Kewirausahaan Vol 10, No 2 (2010): Ekonomi dan Kewirausahaan
Publisher : Ekonomi dan Kewirausahaan

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Abstract

ABSTRAK Applying good corporate governance becoming become strategic determinant to company so that earning ever improve value and also look after going concern growth process. For the reason, every company requires to continue to improve its hard work so that can take benefit from applying good corporate governance. If this good corporate governance principle is executed seriously, may simply company will have sturdy base in running its business. Externally, company will be more be trusted by investor, meaning its stocks market value will increasingly. Partner work even also does not hesitate to develop broader business relation again. Supplier have trustworthy and clear hold and also sure will be treated fairly so that can give best price, which mean create efficiency to company. Creditors even also have high trust for the giving of its credit which is possible needed to extension of is effort. Keywords: Good corporate governance, fairness, transparency, accountability, and responsibility

PERENCANAAN DAN STRATEGI PEMBANGUNAN DI INDONESIA

Ekonomi dan Kewirausahaan Vol 8, No 1 (2008): Ekonomi dan Kewirausahaan
Publisher : Ekonomi dan Kewirausahaan

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Abstract

ABSTRACT Policy of national development has very strategic and important function and role to attainment of target national development. The successful of national development do not only determined by governmental role, but also having to support by role of private sector and society to development stakeholders. Important role differ from people economics is in absorption of labor. Problem lacking of capital faced by Indonesia, can be solved with solid investment pattern of labor, because can create the more business unit as well as opportunity of job, so that can solve problem unemployment. Keywords: unemployment, economic planning, economic development, national development

Pengembangan Bahan Ajar Menggunakan Aplikasi Kvisoft Flipbook Maker Materi Himpunan

Desimal: Jurnal Matematika Vol 1, No 2 (2018): Desimal : Jurnal Matematika
Publisher : UIN Raden Intan Lampung

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Abstract

This study aims to develop e-module teaching materials by applying kvisoft flipbook maker on the subject of the set. To view teacher and learner responses to e-module teaching materials using the kvisoft flipbook maker application on the subject of the set. The method of this research was conducted using Research & Development method of Borg and Gall model which has been modified by Sugiyono covering 7 stages: 1) Potential and Problem, 2) Collecting Data, 3) Product Design, 4) Design Validation, 5) Design Revision, 6) Product Trial, 7) Product Revision. The results of this study indicate that the value of feasibility by the material experts scored an average of 3.23 with good criteria and value of feasibility by media experts with an average score of 3.28 with very good criteria, while the value of feasibility by linguists got a flat score 3.02 with good criteria. The response of the students was very interesting, with the achievement of the average score of 3.33 small group trials and the achievement of the average score of 3.49 field trials, the teachers test response was very interesting with the achievement of an average score of 3.64. This shows that the e-module using the kvisoft flipbook maker application generated in this study is considered feasible for use in the mathematics learning of the set matter.