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Techno: Jurnal Penelitian
Published by Universitas Khairun
ISSN : 1978610X     EISSN : 25807129     DOI : -
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture
TECHNO: Jurnal Penelitian diterbitkan oleh Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Khairun, dua kali terbit dalam setahun dengan jumlah artikel dalam sekali terbit sebanyak 8 tulisan.
Arjuna Subject : -
Articles 169 Documents
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Studi Karakteristik Agregat Pasir Pantai Mangoli, Sosowomo dan Loto dalam Komposisi Beton Arbain Tata; Irnawaty Irnawaty; Cavaruddin Cavaruddin
TECHNO: JURNAL PENELITIAN Vol 6, No 02 (2017): Techno Jurnal Penelitian
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tk.v6i02.561

Abstract

AbstrakPasir sebagai agregat halus memegang peranan penting dalam menentukan karakteristik struktur beton yang dihasikan, sebab agregat halus mengisi sebagian besar volume beton. Pasir pantai sebagai salah satu jenis material agregat halus memiiki ketersediaan dalam kuantitas yang besar namun sifat fisik yang dimiliki perlu diteliti lebih lanjut. Penelitian ini bertujuan untuk mempelajari komposisi material pasir semen dari tiga quary pasir pantai yang berbeda dibandingkan dengan pasir gunung. Didapatkan kekuatan optimum serta pengaruh variasi faktor air semen (FAS) terhadap kuat tekan dan modulus elastisitas beton pasir pantai. Benda uji yang dibuat adalah selinder dengan ukuran 150 x 300 mm dengan variasi faktor air semen (FAS) 0,4; 0,5; 0,6 dan 0,7. Benda uji selinder diuji pada saat umur 28 hari. Hasil penelitian menunjukan bahwa pengujian kuat tekan dari tiga quarry yang berbeda dihasilkan kuat tekan paling tinggi dari pantai Loto. Dari material pasir pantai Loto dilaksanakan pengujian modulus elastisitas dengan nilai FAS divariasikan. Hasil menunjukan terjadi kenaikan nilai kuat tekan dari FAS 0,48 dan 0,4 dari 22,84 MPa menjadi 26,64 MPa, selanjutnya kuat tekan dari FAS 0.5, 0,6 dan 0,7 mengalami penurunan dari 20,32 MPa menjadi 13 FAS 80 MPa dan 11 FAS 73 MPa. Maka variasi optimum yang dapat digunakan adalah variasi FAS 0.4. Begitu pula dengan modulus elastisitas juga mengalami kenaikan dari FAS 0,48 dan 0,4 dari 25063,5 MPa menjadi 26292 MPa, selanjutnya variasi FAS dari 0,5; 0,6 dan 0,7 mengalami penurunan dari 23465 MPa menjadi 18906 MPa dan 15133,5 MPa. Maka variasi optimum yang didapat adalah variasi FAS 0,4.Kata kunci: pasir pantai, kuat tekan beton, modulus elastisitas.  AbstractSand as fine aggregate plays important role in determining the characteristics of resulted concrete structure since fine aggregate fills the most part of concrete volume. Beach sand as one of types of fine aggregate material is available in large quantity; however, its physical characteristics need further examination. The research aimed to study the composition of cement sand material and three different beach sand quarries. The optimal strength and the influence of water cement factor (FAS) variation on the pressure strength and modulus elasticity of beach sand concrete were obtained. The test object made was a 150x200 mm cylinder with variation of water cement factor (FAS) of 0.4; 0.5; 0.6 and 0.7. The cylinder was tested on the 28th days. The research result indicates that the test of pressure strength of the three quarries was different. The highest pressure strength was obtained from Loto Beach. Modulus of elasticity testing was conducted on sand material from Loto Beach with varied FAS values. The result indicates that there was an increase in the value of pressure strength of FAS 0.48 and 0.4 from 22.84 MPa to 26.64 MPa. The pressure strength of FAS 0.5, 0.6 and 0.7 experienced a decrease from 20.32 MPa to 13 FAS 80 MPa and 11 FAS 73 MPa. Thus, optimum variation that can be used was FAS 0.4. The modulus of elasticity was also experienced an increase from FAS 0.48 and 0.4, which was from 25063.5 MPa to 26292 MPa. Further, variation of FAS from 0.5; 0.6 and 0.7 experienced a decrease from 23465 MPa to 18906 MPa and 15133.5 MPa. Therefore, the optimum variation obtained was variation of FAS 0.4.Keywords: beach sand, pressure strength of concrete, modulus of elasticity.
Assessment of Water Quality in Surface Water of Shipbreaking Sites at Kumira Ghat, Sitakunda, Bangladesh Rezuana Afrin; Sydur Rahman Gazi; Abu Abdulla Al-Mamun; Md. Hossain Khan; Muliadi Muliadi; Shamim Al Mamun
TECHNO: JURNAL PENELITIAN Vol 10, No 1 (2021): Techno Jurnal Penelitian
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v10i1.2915

Abstract

The Bay of Bengal ecosystem is blessed with vast resources. A major part of the people living nearby coastal areas depends on marine resources for their livelihood. These resources are facing risks due to pollution caused by shipbreaking activities. The present study was conducted to investigate the water quality adjacent to shipbreaking sites of Kumira Ghat, Sitakunda, Chittagong, Bangladesh and was carried out by field measurements of DO, pH, TDS, EC, temperature; BOD and heavy metals (Cd, Pb, Hg, Cu and Fe) in the laboratory while heavy metals followed by Atomic Absorption Spectrometry (AAS) methods of 5 water samples. The values of DO, pH, TDS, EC, BOD and temperature ranged from 7.16 to 7.43 mg/l, 8.02 to 8.04, >10000 mg/l, 5752 to 6745 µS/cm, 1.4 to 2.76 mg/l, 26.87 to 27.6 ºC, respectively. The values of Temperature, pH and BOD were within the standard limit but TDS and EC values were exceeding the standard level given by WHO for surface water. According to the study, the water was contaminated with Cd (0.003 to 0.007 mg/l), Pb (0.01 mg/l), Hg (<0.001), Cu (<0.1 mg/l) and Fe (25.2 to 53.6 mg/l). The amount of Fe crossed the standard level for surface water (0.1-1.0 mg/l) given by WHO. Finally, it was found that water was alkaline based on pH range. The ionization capacity of the water was very high because of high TDS and EC values. Positive correlations were found among pH and Temperature, BOD and Temperature, BOD and pH, Fe and EC and negative correlations were found among EC and Temperature, EC and BOD, Fe and Temperature and Fe and BOD.
Zakat Classification with Naïve Bayes Method in BAZNAS Yuslena Sari; Muhammad Alkaff; Eka Setya Wijaya; Gusti Nizar Syafi&#039;i
TECHNO: JURNAL PENELITIAN Vol 10, No 1 (2021): Techno Jurnal Penelitian
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v10i1.2750

Abstract

The National Amil Zakat Agency (BAZNAS) of the Banjar Regency, is the regional Zakat Management Agency of the Banjar Regency. BAZNAS Banjar Regency distributes the required alms according to the target to mustahik that is under the criteria or following the provisions of the Shari'a. However, BAZNAS often experiences difficulties in determining mustahik (people who are entitled to receive zakat) due to limited distribution funds and excessive data on Fakir and miskin people who are the main priority. The existence of a system that can determine two groups of recipients of the Fakir and miskin zakat based on data from the underprivileged population can help the distribution of zakat to these 2 groups. In this case, using the Naive Bayes method is very suitable in the classification of the BAZNAS mustahik determination so that it can be used to determine the prospective recipient of zakat. Based on the results of tests conducted on the Naïve Bayes classification with the Confusion Matrix calculation, the accuracy value reached 92.30%.
Soil Macrofauna Diversity in Organic and Conventional Vegetable Fields in Ternate City Betty Kadir Lahati; Erwin Ladjinga
TECHNO: JURNAL PENELITIAN Vol 10, No 1 (2021): Techno Jurnal Penelitian
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v10i1.2912

Abstract

This research is a descriptive exploratory study aiming at analyzing the abundance index and diversity index of soil macrofauna in organic and conventional vegetable fields.  The research method used is an entrapment (Pitfall traps) method where traps are installed in a land with 10mx25m of size and results in 10 plots. Each plot has 5 points determined diagonally to place the pitfall traps; therefore, the total sample points are 50 samples per observation location. Identification of macrofauna trapped in the pitfall trap uses a microscope. Based on the results of diversity analysis, soil macrofauna in organic fields has H'2.6546 with an abundance of 2242 individuals, whereas the conventional fields have H'1.6775 with an abundance of 1507 individuals. In terms of dominance index, the conventional fields have a higher evenness of 0225 with a low value of 0229, while the organic fields have a low dominance index of 0077 yet a higher evenness value of 0344. It can be concluded that the diversity of soil macrofauna in the organic vegetable fields in Ternate city has a higher diversity value because the fields have abundant and more even availability of soil macrofauna so that there are no dominant species found. On the other hand, the conventional vegetable fields have low abundance so that the diversity of soil macrofauna in the fields is low due to one dominant species. The results of the analysis in the two fields indicate that the similarity index is 0.803, which means that the similarity value of the macrofauna species in the two fields is close to the index value. An index value is 0 if there are no similar species in both fields and the value is 1 when both fields have the same species composition. However, the diversity of soil macrofauna in the two different fields has an abundance of soil macrofauna so that it can increase soil fertility and maintain the stability of soil macrofauna and its function in a sustainable agricultural system.
Building Typology of Kadato Kie from Tidore Sultanate Suci Elvira; Aristotulus Ernst Tungka; Cynthia Erlita Virgin Wuisang
TECHNO: JURNAL PENELITIAN Vol 10, No 1 (2021): Techno Jurnal Penelitian
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v10i1.3006

Abstract

The arrival of foreign nations to the Indonesian archipelago, particularly Tidore Island, which is known for its Islamic empire, has impacted the social, cultural, and architectural developments in Tidore. Thus, acculturation of culture and architecture happened where the traditional ones had been assimilated with local culture, including some Arab and Chinese and colonial cultures. Some of these historical heritage buildings are still standing today, especially the Kedaton of the Tidore Sultanate. This study aimed to identify the building typology of the Kedaton (Kadato Kie) of the Tidore Sultanate and elaborate the influence of local and colonial architecture on architectural elements of the Kedaton (Kadato Kie) building of the Tidore Sultanate. This study used a qualitative method with a descriptive approach to reveal the findings through three stages: identification, analysis, and verification. This study focused on the Kedaton of the Tidore Sultanate or Kadato Kie or Kedaton Gunung, the Tidore Sultanate's palace. The Kedaton is located in Soasio Sub-district Tidore Kepulauan City, North Maluku Province, after undergoing reconstruction. Therefore, this is expected to provide theoretical and practical advantages in architecture by analyzing the type and characteristics of the building.
Characterization of Contaminants Molds in Smoked Fish Coated in Chitosan Rinto Muhammad Nur; Bahtila Hakiang; Nurafni Nurafni; Resmila Dewi
TECHNO: JURNAL PENELITIAN Vol 10, No 1 (2021): Techno Jurnal Penelitian
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v10i1.2908

Abstract

Smoked fish is one of the traditional fish processing through the process of open heat smoking. The water content in smoked fish is quite high. The high water content will facilitate the growth and development of decaying microbes. Some studies have reported that smoked fish after being stored for several days will be overgrown at any time, even smoked fish that have been coated with chitosan. Research objectives to analyze the characteristics of contaminants in smoked fish treated with chitosan. The research was conducted from November to December 2020 at FPIK UNIPAS Morotai Laboratory. The growth medium of the glyph uses potato extract (PDA), the isolation of the glyph from smoked cob fish, as well as the characterization of the glyph which includes macroscopic and microscopic characters. The data obtained is analyzed descriptively. The result is isolation was found five isolates of any time, namely isolates KU1, KU2, KU3, MG1, and KS1. Based on macroscopic and microscopic characterization, isolate KU1 such as Fusarium oxysporum, isolate KU2 such as Aspergillus niger, isolate KU3 such as Penicillium sp., isolate MG1 such as Aspergillus flavus, and isolate KS1 such as Acremonium sp.
Ceratorhiza Induction towards ORSV Infection on Viability of Phalaenopsis and Dendrobium Valentina Dwi Anggita Sari; Mahfut Mahfut; Sri Wahyuningsih; Tundjung Tripeni Handayani
TECHNO: JURNAL PENELITIAN Vol 10, No 1 (2021): Techno Jurnal Penelitian
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v10i1.3041

Abstract

Orchids have a high level of biodiversity, such as Dendrobium and Phalaenopsis, which are epiphytes. Dendrobium can adapt to the condition of where it lives while Phalaenopsis can grow in highlands and depends on sunlight and humidity. Virus infection has become one of the obstacles in cultivating Dendrobium and Phalaenopsis. Efforts to increase fitness and control in Dendrobium and Phalaenopsis cultivation can be done by inducing the plant’s fitness using a mycorrhiza, such as Ceratorhiza. A mycorrhiza is a form of mutualism between fungi and the plant’s root. This research is aimed to give information related to the utilization of Cerathoriza for inducing orchids to suppress Odontoglossum ringspot virus (ORSV) infection, giving it better growth. The research was done in February-March 2021 at Botany Laboratory University of Lampung. A completely randomized factorial design was used on two factors, kind of orchid and mycorrhiza treatment (M), virus (V), and mycorrhiza virus (MV). Variables examined in this research are the amount of living and dead roots and leaves. Data obtained is homogenized using Levene’s test and continued by ANOVA with the significance level of 5% and further testing using Tukey’s test with the significance level of 5%. From this research, it is known that interaction between Phalaenopsis and Dendrobium exists during virus and mycorrhiza administration. It is concluded that Phalaenopsis anabilis is more vulnerable than Dendrobium discolor.
Forecasting of Significant Wave Height and Period at Western Waters of Ternate Island, North Maluku Mohammad Ridwan Lessy; Rommy Mudafar Abdullah
TECHNO: JURNAL PENELITIAN Vol 10, No 1 (2021): Techno Jurnal Penelitian
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v10i1.3026

Abstract

The water of West Ternate Island is open waters which are very dynamic oceanographic conditions. One of them is ocean waves that are strongly related to wind friction. This study aims to analyze the height and wave period that occurred in the western part waters of Ternate Island based on wind data for 10 years. It is expected that the results of this study will be useful for policymakers in the sustainable management of coastal areas in Ternate City. This research used Wilson Method to estimate the wave height in four seasons.  The data collected includes the maximum wind direction and speed during the period 2009-2018 obtained from the Meteorological and Geophysical Station of Baabullah Airport, Ternate City. Wind data will be transformed to stability correction and wind stress factor to determine height and period of wave. The results showed that in The West Season and Transition Season 1 (TS 1), the wind direction is more dominant moving from the Northwest to the Southeast with an average maximum speed of 17.71 knots. During the observation year, significant wave height (Hs) formed in the Western Season period as high as 1.25 m – 2.75 m while in Transition Season 1 the wave height was between 1.0 m – 2.31m. While in the Eastern Season period the wave height that occurs ranges from 0.61 m – 1.55 m and in the MP2 period ranges from 0.67 m – 1.43 m. In the Western Season, the wave period ranges from 4.67 – 6.82 seconds, and in Transition Season 1 between 4.45 – 6.44 seconds. While in the eastern season the wave period ranges from 3.29 – 4.89 seconds and in Transition Season 2 (TS 2) ranges from 3.43 – 4.68 seconds.
Livelihood Asset Maps: Livelihood Assets Concerning The Echo-Agro-Tourism Community-Based Management of The Komunitas Cengkih Afo in Tongole Ternate-North Maluku Mardiyani Sidayat; Mila Fatmawati
TECHNO: JURNAL PENELITIAN Vol 10, No 1 (2021): Techno Jurnal Penelitian
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v10i1.3074

Abstract

Humans need livelihood assets for their survival which particularly are related to the resources that are available in their environment and/or can be accessed to meet their needs. Livelihoods assets which are including capabilities, assets, and activities that carry out to support the fulfillment of basic life needs. The Department for International Development (DFID) identifies 5 categories of assets used for livelihoods which consist of human, natural, financial, physical,  and social capitals. The majority of people who live in Tongole Village work as farmers, and therefore by the presence of the echo-agro tourism activities, the livelihood assets of the community can increase and/or vary because there are other possible options to increase the economic income earned. The research is aiming to identify the use of livelihood assets by the farmer groups in Komunitas Cengkih Afo. The study has taken place in Tongole village,  where the Komunitas Cengkih afo is located. Collecting data is using a purposive sampling method, which refers only to the member of the Komunitas Cengkih Afo. Data on livelihood assets is taken base on the criteria set out according to the pentagon diagram which consists of human, natural, financial, physical, and social capitals. Livelihood assets are categorized in high, medium, and low categories from each respondent. The influence of livelihood assets was analyzed using a scoring method and presented in a pentagon diagram for each capital. Results showed that human, natural,  and social capital were the most utilized for all the members, while physical and financial capital was less utilized and/or at the moderate level.
Effect of Foliar Organic Fertilizer on Caisim (Brassica junceae L) Growth and Yield Sugeng Haryanto; Helda Sabban
TECHNO: JURNAL PENELITIAN Vol 10, No 1 (2021): Techno Jurnal Penelitian
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v10i1.2714

Abstract

The Caisim vegetable crop (Brassica chinensis) is a commodity that has commercial value and is a favorite commodity for some people in Indonesia. The demand for Caisim crop is expected to increase along with population growth with increased purchasing power. Moreover, Caisim crops are easily available in the market. The study determines the effect of treatments of foliar organic fertilizer application time on growth rate and production rate of Caisim (Brassica juncea L) crops. The research carries out in Gambesi, South Ternate from July to September 2020. Caisim crops in the beds are treated with morning fertilizing using foliar fertilizer. The research uses a randomized block design of 5 treatments and 3 replications. The 15 treatment units, namely P0 = without fertilization (control), P1 = application time at 6.00 - 7.00 WIT, P2 = application time at 7.00 - 8.00 WIT, P3 = application time at 8.00 - 9.00 WIT, and P4 = application time at 9.00 - 10.00 WIT. All treatments (P1, P2, P3, and P4) use the same dose of 2 cc/liter of water. The results indicate that the treatment P1 (6.00 - 7.00 WIT) has an excellent effect on fertilizer application times because it has a significant effect on crop height, the number of leaves, leaf area, and fresh weight compared to treatment P0, P2, P3, and P4.

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